231025356456 has 32 divisors (see below), whose sum is σ = 581021864640. Its totient is φ = 76547322368.

The previous prime is 231025356449. The next prime is 231025356481. The reversal of 231025356456 is 654653520132.

It is a happy 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, 28816521 + ... + 28824536.

It is an arithmetic number, because the mean of its divisors is an integer number (18156933270).

Almost surely, 2^231025356456 is an apocalyptic number.

It is an amenable number.

231025356456 is an abundant number, since it is smaller than the sum of its proper divisors (349996508184).

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

231025356456 is a wasteful number, since it uses less digits than its factorization.

231025356456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57641233 (or 57641229 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 42.

Adding to 231025356456 its reverse (654653520132), we get a palindrome (885678876588).

The spelling of 231025356456 in words is "two hundred thirty-one billion, twenty-five million, three hundred fifty-six thousand, four hundred fifty-six".