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7157316131 = 719131547751
BaseRepresentation
bin1101010101001101…
…11111101000100011
3200110210202022221122
412222212333220203
5104124233104011
63142114042455
7342236116610
oct65246775043
920423668848
107157316131
1130431335a9
121478b7942b
138a0a96c04
144bc7cb507
152bd5413db
hex1aa9bfa23

7157316131 has 32 divisors (see below), whose sum is σ = 8703467520. Its totient is φ = 5749380000.

The previous prime is 7157316119. The next prime is 7157316143. The reversal of 7157316131 is 1316137517.

It is an interprime number because it is at equal distance from previous prime (7157316119) and next prime (7157316143).

It is not a de Polignac number, because 7157316131 - 218 = 7157053987 is a prime.

It is a super-2 number, since 2×71573161312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7157316091 and 7157316100.

It is not an unprimeable number, because it can be changed into a prime (7157316161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9530006 + ... + 9530756.

It is an arithmetic number, because the mean of its divisors is an integer number (271983360).

Almost surely, 27157316131 is an apocalyptic number.

7157316131 is a deficient number, since it is larger than the sum of its proper divisors (1546151389).

7157316131 is a wasteful number, since it uses less digits than its factorization.

7157316131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455.

The product of its digits is 13230, while the sum is 35.

The square root of 7157316131 is about 84600.9227550149. The cubic root of 7157316131 is about 1927.1553869330.

The spelling of 7157316131 in words is "seven billion, one hundred fifty-seven million, three hundred sixteen thousand, one hundred thirty-one".

Divisors: 1 7 19 131 133 547 751 917 2489 3829 5257 10393 14269 17423 71657 72751 98381 99883 410797 501599 688667 1361483 1869239 2875579 7805143 9530381 13084673 53814407 54636001 376700849 1022473733 7157316131