315231131022 has 32 divisors (see below), whose sum is σ = 658640747520. Its totient is φ = 100462306560.

The previous prime is 315231131003. The next prime is 315231131071. The reversal of 315231131022 is 220131132513.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 315231130983 and 315231131001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10194147 + ... + 10225022.

It is an arithmetic number, because the mean of its divisors is an integer number (20582523360).

Almost surely, 2^315231131022 is an apocalyptic number.

315231131022 is an abundant number, since it is smaller than the sum of its proper divisors (343409616498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315231131022 is a wasteful number, since it uses less digits than its factorization.

315231131022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20419288.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 315231131022 its reverse (220131132513), we get a palindrome (535362263535).

The spelling of 315231131022 in words is "three hundred fifteen billion, two hundred thirty-one million, one hundred thirty-one thousand, twenty-two".