12503887531 has 2 divisors, whose sum is σ = 12503887532. Its totient is φ = 12503887530.

The previous prime is 12503887511. The next prime is 12503887537. The reversal of 12503887531 is 13578830521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12503887531 - 2¹¹ = 12503885483 is a prime.

It is a super-2 number, since 2×12503887531² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12503887537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251943765 + 6251943766.

It is an arithmetic number, because the mean of its divisors is an integer number (6251943766).

Almost surely, 2^12503887531 is an apocalyptic number.

12503887531 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503887531 is an equidigital number, since it uses as much as digits as its factorization.

12503887531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 12503887531 in words is "twelve billion, five hundred three million, eight hundred eighty-seven thousand, five hundred thirty-one".