500013131 has 4 divisors (see below), whose sum is σ = 500058264. Its totient is φ = 499968000.

The previous prime is 500013103. The next prime is 500013179. The reversal of 500013131 is 131310005.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-500013131 is a prime.

It is a super-2 number, since 2×500013131² = 500026262344846322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500013931) 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, 6731 + ... + 32331.

It is an arithmetic number, because the mean of its divisors is an integer number (125014566).

Almost surely, 2^500013131 is an apocalyptic number.

500013131 is a deficient number, since it is larger than the sum of its proper divisors (45133).

500013131 is a wasteful number, since it uses less digits than its factorization.

500013131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45132.

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

The square root of 500013131 is about 22360.9733911563. The cubic root of 500013131 is about 793.7074739777.

Adding to 500013131 its reverse (131310005), we get a palindrome (631323136).

The spelling of 500013131 in words is "five hundred million, thirteen thousand, one hundred thirty-one".