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31330716541 = 2310139134353
BaseRepresentation
bin11101001011011101…
…001100101101111101
32222212111021022021221
4131023131030231331
51003131130412131
622220525553341
72156255460625
oct351335145575
988774238257
1031330716541
1112318411073
1260a4715851
132c53c96237
141733083885
15c35885411
hex74b74cb7d

31330716541 has 8 divisors (see below), whose sum is σ = 32696389440. Its totient is φ = 29965332672.

The previous prime is 31330716523. The next prime is 31330716553. The reversal of 31330716541 is 14561703313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31330716541 - 25 = 31330716509 is a prime.

It is a super-2 number, since 2×313307165412 (a number of 22 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 = 31330716497 and 31330716506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330716041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166021 + ... + 300373.

It is an arithmetic number, because the mean of its divisors is an integer number (4087048680).

Almost surely, 231330716541 is an apocalyptic number.

It is an amenable number.

31330716541 is a deficient number, since it is larger than the sum of its proper divisors (1365672899).

31330716541 is a wasteful number, since it uses less digits than its factorization.

31330716541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144515.

The product of its (nonzero) digits is 22680, while the sum is 34.

The spelling of 31330716541 in words is "thirty-one billion, three hundred thirty million, seven hundred sixteen thousand, five hundred forty-one".

Divisors: 1 23 10139 134353 233197 3090119 1362205067 31330716541