251355352140231 has 16 divisors (see below), whose sum is σ = 336145630030560. Its totient is φ = 167067812003840.

The previous prime is 251355352140119. The next prime is 251355352140281. The reversal of 251355352140231 is 132041253553152.

It is a cyclic number.

It is not a de Polignac number, because 251355352140231 - 2⁷ = 251355352140103 is a prime.

It is a super-2 number, since 2×251355352140231² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251355352140281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13299450 + ... + 26068871.

It is an arithmetic number, because the mean of its divisors is an integer number (21009101876910).

Almost surely, 2^{251355352140231} is an apocalyptic number.

251355352140231 is a deficient number, since it is larger than the sum of its proper divisors (84790277890329).

251355352140231 is a wasteful number, since it uses less digits than its factorization.

251355352140231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39374706.

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 251355352140231 in words is "two hundred fifty-one trillion, three hundred fifty-five billion, three hundred fifty-two million, one hundred forty thousand, two hundred thirty-one".