49212131 has 4 divisors (see below), whose sum is σ = 49346592. Its totient is φ = 49077672.

The previous prime is 49212091. The next prime is 49212133. The reversal of 49212131 is 13121294.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13121294 = 2 ⋅6560647.

It is a cyclic number.

It is not a de Polignac number, because 49212131 - 2⁶ = 49212067 is a prime.

It is a super-2 number, since 2×49212131² = 4843667675122322, 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 = 49212097 and 49212106.

It is not an unprimeable number, because it can be changed into a prime (49212133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66680 + ... + 67413.

It is an arithmetic number, because the mean of its divisors is an integer number (12336648).

Almost surely, 2^49212131 is an apocalyptic number.

49212131 is a deficient number, since it is larger than the sum of its proper divisors (134461).

49212131 is a wasteful number, since it uses less digits than its factorization.

49212131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134460.

The product of its digits is 432, while the sum is 23.

The square root of 49212131 is about 7015.1358504308. The cubic root of 49212131 is about 366.4578735066.

The spelling of 49212131 in words is "forty-nine million, two hundred twelve thousand, one hundred thirty-one".