50313131 has 16 divisors (see below), whose sum is σ = 56030208. Its totient is φ = 45171720.

The previous prime is 50313127. The next prime is 50313143. The reversal of 50313131 is 13131305.

It is not a de Polignac number, because 50313131 - 2² = 50313127 is a prime.

It is a super-2 number, since 2×50313131² = 5062822302046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (50312131) 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, 136910 + ... + 137276.

It is an arithmetic number, because the mean of its divisors is an integer number (3501888).

Almost surely, 2^50313131 is an apocalyptic number.

50313131 is a deficient number, since it is larger than the sum of its proper divisors (5717077).

50313131 is a wasteful number, since it uses less digits than its factorization.

50313131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 481 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 50313131 is about 7093.1749590716. The cubic root of 50313131 is about 369.1706063022.

Adding to 50313131 its reverse (13131305), we get a palindrome (63444436).

The spelling of 50313131 in words is "fifty million, three hundred thirteen thousand, one hundred thirty-one".