49312631 has 16 divisors (see below), whose sum is σ = 53654400. Its totient is φ = 45147648.

The previous prime is 49312609. The next prime is 49312639. The reversal of 49312631 is 13621394.

It is a de Polignac number, because none of the positive numbers 2^k-49312631 is a prime.

It is a super-2 number, since 2×49312631² = 4863471152284322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49312594 and 49312603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49312639) 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, 206210 + ... + 206448.

It is an arithmetic number, because the mean of its divisors is an integer number (3353400).

Almost surely, 2^49312631 is an apocalyptic number.

49312631 is a deficient number, since it is larger than the sum of its proper divisors (4341769).

49312631 is a wasteful number, since it uses less digits than its factorization.

49312631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its digits is 3888, while the sum is 29.

The square root of 49312631 is about 7022.2952800349. The cubic root of 49312631 is about 366.7071614596.

The spelling of 49312631 in words is "forty-nine million, three hundred twelve thousand, six hundred thirty-one".