231541004 has 6 divisors (see below), whose sum is σ = 405196764. Its totient is φ = 115770500.

The previous prime is 231540997. The next prime is 231541007. The reversal of 231541004 is 400145132.

It is a super-2 number, since 2×231541004² = 107222473066656032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231541007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28942622 + ... + 28942629.

It is an arithmetic number, because the mean of its divisors is an integer number (67532794).

Almost surely, 2^231541004 is an apocalyptic number.

It is an amenable number.

231541004 is a deficient number, since it is larger than the sum of its proper divisors (173655760).

231541004 is a wasteful number, since it uses less digits than its factorization.

231541004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57885255 (or 57885253 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 231541004 is about 15216.4714700879. The cubic root of 231541004 is about 614.0578731431.

Adding to 231541004 its reverse (400145132), we get a palindrome (631686136).

The spelling of 231541004 in words is "two hundred thirty-one million, five hundred forty-one thousand, four".