251130110133 has 32 divisors (see below), whose sum is σ = 388448413696. Its totient is φ = 141338374848.

The previous prime is 251130110053. The next prime is 251130110149. The reversal of 251130110133 is 331011031152.

It is not a de Polignac number, because 251130110133 - 2¹⁴ = 251130093749 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251130118133) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12840360 + ... + 12859902.

It is an arithmetic number, because the mean of its divisors is an integer number (12139012928).

Almost surely, 2^251130110133 is an apocalyptic number.

It is an amenable number.

251130110133 is a deficient number, since it is larger than the sum of its proper divisors (137318303563).

251130110133 is a wasteful number, since it uses less digits than its factorization.

251130110133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28753.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 251130110133 its reverse (331011031152), we get a palindrome (582141141285).

The spelling of 251130110133 in words is "two hundred fifty-one billion, one hundred thirty million, one hundred ten thousand, one hundred thirty-three".