231353481 has 32 divisors (see below), whose sum is σ = 342144000. Its totient is φ = 138397248.

The previous prime is 231353461. The next prime is 231353483. The reversal of 231353481 is 184353132.

It is not a de Polignac number, because 231353481 - 2⁵ = 231353449 is a prime.

It is a super-2 number, since 2×231353481² = 107048866341634722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231353483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142090 + ... + 143708.

It is an arithmetic number, because the mean of its divisors is an integer number (10692000).

Almost surely, 2^231353481 is an apocalyptic number.

It is an amenable number.

231353481 is a deficient number, since it is larger than the sum of its proper divisors (110790519).

231353481 is a wasteful number, since it uses less digits than its factorization.

231353481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773.

The product of its digits is 8640, while the sum is 30.

The square root of 231353481 is about 15210.3083795168. The cubic root of 231353481 is about 613.8920550334.

The spelling of 231353481 in words is "two hundred thirty-one million, three hundred fifty-three thousand, four hundred eighty-one".