2551347931 has 4 divisors (see below), whose sum is σ = 2783288664. Its totient is φ = 2319407200.

The previous prime is 2551347923. The next prime is 2551347937. The reversal of 2551347931 is 1397431552.

2551347931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2551347931 - 2³ = 2551347923 is a prime.

It is a super-2 number, since 2×2551347931² = 13018752530035961522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2551347937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115970350 + ... + 115970371.

It is an arithmetic number, because the mean of its divisors is an integer number (695822166).

Almost surely, 2^2551347931 is an apocalyptic number.

2551347931 is a deficient number, since it is larger than the sum of its proper divisors (231940733).

2551347931 is a wasteful number, since it uses less digits than its factorization.

2551347931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231940732.

The product of its digits is 113400, while the sum is 40.

The square root of 2551347931 is about 50510.8694342119. The cubic root of 2551347931 is about 1366.4378897707.

The spelling of 2551347931 in words is "two billion, five hundred fifty-one million, three hundred forty-seven thousand, nine hundred thirty-one".