231057530 has 16 divisors (see below), whose sum is σ = 453713184. Its totient is φ = 84020880.

The previous prime is 231057503. The next prime is 231057551. The reversal of 231057530 is 35750132.

It is a self number, because there is not a number n which added to its sum of digits gives 231057530.

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, 1050152 + ... + 1050371.

It is an arithmetic number, because the mean of its divisors is an integer number (28357074).

Almost surely, 2^231057530 is an apocalyptic number.

231057530 is a deficient number, since it is larger than the sum of its proper divisors (222655654).

231057530 is a wasteful number, since it uses less digits than its factorization.

231057530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100541.

The product of its (nonzero) digits is 3150, while the sum is 26.

The square root of 231057530 is about 15200.5766337991. The cubic root of 231057530 is about 613.6301765548.

The spelling of 231057530 in words is "two hundred thirty-one million, fifty-seven thousand, five hundred thirty".