51100245231 has 32 divisors (see below), whose sum is σ = 78386416128. Its totient is φ = 29005568640.

The previous prime is 51100245221. The next prime is 51100245283. The reversal of 51100245231 is 13254200115.

It is a happy number.

It is not a de Polignac number, because 51100245231 - 2⁷ = 51100245103 is a prime.

It is a super-2 number, since 2×51100245231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100245221) 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, 10475365 + ... + 10480241.

It is an arithmetic number, because the mean of its divisors is an integer number (2449575504).

Almost surely, 2^51100245231 is an apocalyptic number.

51100245231 is a deficient number, since it is larger than the sum of its proper divisors (27286170897).

51100245231 is a wasteful number, since it uses less digits than its factorization.

51100245231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8111.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 51100245231 its reverse (13254200115), we get a palindrome (64354445346).

The spelling of 51100245231 in words is "fifty-one billion, one hundred million, two hundred forty-five thousand, two hundred thirty-one".