232507681 has 4 divisors (see below), whose sum is σ = 265723072. Its totient is φ = 199292292.

The previous prime is 232507673. The next prime is 232507687. The reversal of 232507681 is 186705232.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 232507681 - 2³ = 232507673 is a prime.

It is a super-2 number, since 2×232507681² = 108119643447995522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232507687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16607685 + ... + 16607698.

It is an arithmetic number, because the mean of its divisors is an integer number (66430768).

Almost surely, 2^232507681 is an apocalyptic number.

It is an amenable number.

232507681 is a deficient number, since it is larger than the sum of its proper divisors (33215391).

232507681 is an equidigital number, since it uses as much as digits as its factorization.

232507681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33215390.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 232507681 is about 15248.2025498089. The cubic root of 232507681 is about 614.9112446001.

The spelling of 232507681 in words is "two hundred thirty-two million, five hundred seven thousand, six hundred eighty-one".