231540704 has 24 divisors (see below), whose sum is σ = 460278000. Its totient is φ = 114644736.

The previous prime is 231540703. The next prime is 231540713. The reversal of 231540704 is 407045132.

231540704 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231540704² = 107222195217631232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231540703) 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, 31829 + ... + 38420.

It is an arithmetic number, because the mean of its divisors is an integer number (19178250).

Almost surely, 2^231540704 is an apocalyptic number.

It is an amenable number.

231540704 is a deficient number, since it is larger than the sum of its proper divisors (228737296).

231540704 is a wasteful number, since it uses less digits than its factorization.

231540704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70362 (or 70354 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 231540704 is about 15216.4616123460. The cubic root of 231540704 is about 614.0576079382.

Adding to 231540704 its reverse (407045132), we get a palindrome (638585836).

The spelling of 231540704 in words is "two hundred thirty-one million, five hundred forty thousand, seven hundred four".