Search a number
-
+
12931424157 = 317783242393
BaseRepresentation
bin11000000101100010…
…11101111110011101
31020101012202102002110
430002301131332131
5202440421033112
65535101144233
7635311202031
oct140261357635
936335672073
1012931424157
1155364a7403
12260a85b079
1312b1111492
148a95d81c1
1550a40813c
hex302c5df9d

12931424157 has 8 divisors (see below), whose sum is σ = 17242939584. Its totient is φ = 8620429088.

The previous prime is 12931424137. The next prime is 12931424161. The reversal of 12931424157 is 75142413921.

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 12931424157 - 219 = 12930899869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931424137) 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 7 ways as a sum of consecutive naturals, for example, 67848 + ... + 174545.

It is an arithmetic number, because the mean of its divisors is an integer number (2155367448).

Almost surely, 212931424157 is an apocalyptic number.

It is an amenable number.

12931424157 is a deficient number, since it is larger than the sum of its proper divisors (4311515427).

12931424157 is a wasteful number, since it uses less digits than its factorization.

12931424157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260179.

The product of its digits is 60480, while the sum is 39.

The spelling of 12931424157 in words is "twelve billion, nine hundred thirty-one million, four hundred twenty-four thousand, one hundred fifty-seven".

Divisors: 1 3 17783 53349 242393 727179 4310474719 12931424157