31223430231024 has 40 divisors (see below), whose sum is σ = 81982831843792. Its totient is φ = 10237190238720.

The previous prime is 31223430231011. The next prime is 31223430231073. The reversal of 31223430231024 is 42013203432213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31223430230982 and 31223430231000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5331866989 + ... + 5331872844.

Almost surely, 2^{31223430231024} is an apocalyptic number.

It is an amenable number.

31223430231024 is an abundant number, since it is smaller than the sum of its proper divisors (50759401612768).

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

31223430231024 is a wasteful number, since it uses less digits than its factorization.

31223430231024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10663739905 (or 10663739899 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 31223430231024 its reverse (42013203432213), we get a palindrome (73236633663237).

The spelling of 31223430231024 in words is "thirty-one trillion, two hundred twenty-three billion, four hundred thirty million, two hundred thirty-one thousand, twenty-four".