50131031 has 4 divisors (see below), whose sum is σ = 50146752. Its totient is φ = 50115312.

The previous prime is 50131021. The next prime is 50131043. The reversal of 50131031 is 13013105.

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 50131031 - 2¹⁸ = 49868887 is a prime.

It is a super-2 number, since 2×50131031² = 5026240538245922, 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 = 50130997 and 50131015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50131001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1190 + ... + 10083.

It is an arithmetic number, because the mean of its divisors is an integer number (12536688).

Almost surely, 2^50131031 is an apocalyptic number.

50131031 is a deficient number, since it is larger than the sum of its proper divisors (15721).

50131031 is a wasteful number, since it uses less digits than its factorization.

50131031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15720.

The product of its (nonzero) digits is 45, while the sum is 14.

The square root of 50131031 is about 7080.3270404692. The cubic root of 50131031 is about 368.7246840420.

Adding to 50131031 its reverse (13013105), we get a palindrome (63144136).

The spelling of 50131031 in words is "fifty million, one hundred thirty-one thousand, thirty-one".