255031623 has 72 divisors (see below), whose sum is σ = 492261120. Its totient is φ = 125465760.

The previous prime is 255031619. The next prime is 255031627. The reversal of 255031623 is 326130552.

255031623 is a `hidden beast` number, since 2 + 5 + 5 + 0 + 31 + 623 = 666.

It is an interprime number because it is at equal distance from previous prime (255031619) and next prime (255031627).

It is not a de Polignac number, because 255031623 - 2² = 255031619 is a prime.

It is a super-2 number, since 2×255031623² = 130082257460028258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (255031627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 90786 + ... + 93552.

It is an arithmetic number, because the mean of its divisors is an integer number (6836960).

Almost surely, 2^255031623 is an apocalyptic number.

255031623 is a deficient number, since it is larger than the sum of its proper divisors (237229497).

255031623 is a wasteful number, since it uses less digits than its factorization.

255031623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817 (or 2807 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 255031623 is about 15969.7095465134. The cubic root of 255031623 is about 634.1587827547.

It can be divided in two parts, 2550 and 31623, that multiplied together give a triangular number (80638650 = T₁₂₆₉₉).

The spelling of 255031623 in words is "two hundred fifty-five million, thirty-one thousand, six hundred twenty-three".