315235121031 has 16 divisors (see below), whose sum is σ = 467043909600. Its totient is φ = 210143735424.

The previous prime is 315235121029. The next prime is 315235121053. The reversal of 315235121031 is 130121532513.

315235121031 is a `hidden beast` number, since 31 + 523 + 5 + 1 + 2 + 103 + 1 = 666.

It is not a de Polignac number, because 315235121031 - 2¹ = 315235121029 is a prime.

It is a super-2 number, since 2×315235121031² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 315235120986 and 315235121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315235121011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93105 + ... + 799461.

It is an arithmetic number, because the mean of its divisors is an integer number (29190244350).

Almost surely, 2^315235121031 is an apocalyptic number.

315235121031 is a deficient number, since it is larger than the sum of its proper divisors (151808788569).

315235121031 is a wasteful number, since it uses less digits than its factorization.

315235121031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722895 (or 722889 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

Adding to 315235121031 its reverse (130121532513), we get a palindrome (445356653544).

The spelling of 315235121031 in words is "three hundred fifteen billion, two hundred thirty-five million, one hundred twenty-one thousand, thirty-one".