231705457152 has 120 divisors (see below), whose sum is σ = 668414008944. Its totient is φ = 71293906944.

The previous prime is 231705457117. The next prime is 231705457163. The reversal of 231705457152 is 251754507132.

It is a happy number.

It is a super-2 number, since 2×231705457152² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 186718 + ... + 705885.

Almost surely, 2^231705457152 is an apocalyptic number.

It is an amenable number.

231705457152 is an abundant number, since it is smaller than the sum of its proper divisors (436708551792).

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

231705457152 is an equidigital number, since it uses as much as digits as its factorization.

231705457152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892650 (or 892621 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 42.

The spelling of 231705457152 in words is "two hundred thirty-one billion, seven hundred five million, four hundred fifty-seven thousand, one hundred fifty-two".