49312131 has 16 divisors (see below), whose sum is σ = 71879808. Its totient is φ = 29822400.

The previous prime is 49312117. The next prime is 49312169. The reversal of 49312131 is 13121394.

It is a de Polignac number, because none of the positive numbers 2^k-49312131 is a prime.

It is a super-2 number, since 2×49312131² = 4863372527522322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (49312111) 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, 17535 + ... + 20151.

It is an arithmetic number, because the mean of its divisors is an integer number (4492488).

Almost surely, 2^49312131 is an apocalyptic number.

49312131 is a deficient number, since it is larger than the sum of its proper divisors (22567677).

49312131 is a wasteful number, since it uses less digits than its factorization.

49312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3202.

The product of its digits is 648, while the sum is 24.

The square root of 49312131 is about 7022.2596790492. The cubic root of 49312131 is about 366.7059220598.

The spelling of 49312131 in words is "forty-nine million, three hundred twelve thousand, one hundred thirty-one".