231056406 has 24 divisors (see below), whose sum is σ = 572139984. Its totient is φ = 66016080.

The previous prime is 231056389. The next prime is 231056407. The reversal of 231056406 is 604650132.

231056406 is a `hidden beast` number, since 2 + 3 + 10 + 5 + 640 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 231056406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231056407) 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 11 ways as a sum of consecutive naturals, for example, 916765 + ... + 917016.

It is an arithmetic number, because the mean of its divisors is an integer number (23839166).

Almost surely, 2^231056406 is an apocalyptic number.

231056406 is an abundant number, since it is smaller than the sum of its proper divisors (341083578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231056406 is a wasteful number, since it uses less digits than its factorization.

231056406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833796 (or 1833793 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 231056406 is about 15200.5396614725. The cubic root of 231056406 is about 613.6291815336.

The spelling of 231056406 in words is "two hundred thirty-one million, fifty-six thousand, four hundred six".