50131131 has 4 divisors (see below), whose sum is σ = 66841512. Its totient is φ = 33420752.

The previous prime is 50131129. The next prime is 50131153. The reversal of 50131131 is 13113105.

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

It is a cyclic number.

It is not a de Polignac number, because 50131131 - 2¹ = 50131129 is a prime.

It is a super-2 number, since 2×50131131² = 5026260590678322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 50131131.

It is not an unprimeable number, because it can be changed into a prime (50131121) 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, 8355186 + ... + 8355191.

It is an arithmetic number, because the mean of its divisors is an integer number (16710378).

Almost surely, 2^50131131 is an apocalyptic number.

50131131 is a deficient number, since it is larger than the sum of its proper divisors (16710381).

50131131 is a wasteful number, since it uses less digits than its factorization.

50131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16710380.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 50131131 is about 7080.3341022864. The cubic root of 50131131 is about 368.7249292157.

Adding to 50131131 its reverse (13113105), we get a palindrome (63244236).

The spelling of 50131131 in words is "fifty million, one hundred thirty-one thousand, one hundred thirty-one".