503125931 has 16 divisors (see below), whose sum is σ = 664174080. Its totient is φ = 368983680.

The previous prime is 503125891. The next prime is 503125933. The reversal of 503125931 is 139521305.

It is a cyclic number.

It is not a de Polignac number, because 503125931 - 2¹⁴ = 503109547 is a prime.

It is a super-2 number, since 2×503125931² = 506271404889233522, 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 = 503125894 and 503125903.

It is not an unprimeable number, because it can be changed into a prime (503125933) 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, 190871 + ... + 193488.

It is an arithmetic number, because the mean of its divisors is an integer number (41510880).

Almost surely, 2^503125931 is an apocalyptic number.

503125931 is a deficient number, since it is larger than the sum of its proper divisors (161048149).

503125931 is a wasteful number, since it uses less digits than its factorization.

503125931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384394.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 503125931 is about 22430.4688091890. The cubic root of 503125931 is about 795.3511263588.

The spelling of 503125931 in words is "five hundred three million, one hundred twenty-five thousand, nine hundred thirty-one".