315145433031 has 48 divisors (see below), whose sum is σ = 497543679360. Its totient is φ = 176252155200.

The previous prime is 315145432991. The next prime is 315145433039. The reversal of 315145433031 is 130334541513.

It is not a de Polignac number, because 315145433031 - 2¹⁷ = 315145301959 is a prime.

It is a super-2 number, since 2×315145433031² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 315145432983 and 315145433001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315145433039) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19863780 + ... + 19879638.

It is an arithmetic number, because the mean of its divisors is an integer number (10365493320).

Almost surely, 2^315145433031 is an apocalyptic number.

315145433031 is a deficient number, since it is larger than the sum of its proper divisors (182398246329).

315145433031 is a wasteful number, since it uses less digits than its factorization.

315145433031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20108 (or 20097 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 33.

Adding to 315145433031 its reverse (130334541513), we get a palindrome (445479974544).

The spelling of 315145433031 in words is "three hundred fifteen billion, one hundred forty-five million, four hundred thirty-three thousand, thirty-one".