255631371 has 8 divisors (see below), whose sum is σ = 341053440. Its totient is φ = 170315112.

The previous prime is 255631357. The next prime is 255631381. The reversal of 255631371 is 173136552.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-255631371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (255631381) 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 7 ways as a sum of consecutive naturals, for example, 20631 + ... + 30608.

It is an arithmetic number, because the mean of its divisors is an integer number (42631680).

Almost surely, 2^255631371 is an apocalyptic number.

255631371 is a deficient number, since it is larger than the sum of its proper divisors (85422069).

255631371 is a wasteful number, since it uses less digits than its factorization.

255631371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52905.

The product of its digits is 18900, while the sum is 33.

The square root of 255631371 is about 15988.4761938091. The cubic root of 255631371 is about 634.6555024765.

The spelling of 255631371 in words is "two hundred fifty-five million, six hundred thirty-one thousand, three hundred seventy-one".