15208712131 has 2 divisors, whose sum is σ = 15208712132. Its totient is φ = 15208712130.

The previous prime is 15208712107. The next prime is 15208712143. The reversal of 15208712131 is 13121780251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15208712131 - 2¹⁹ = 15208187843 is a prime.

It is a super-2 number, since 2×15208712131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15208712093 and 15208712102.

It is not a weakly prime, because it can be changed into another prime (15208712231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7604356065 + 7604356066.

It is an arithmetic number, because the mean of its divisors is an integer number (7604356066).

Almost surely, 2^15208712131 is an apocalyptic number.

15208712131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15208712131 is an equidigital number, since it uses as much as digits as its factorization.

15208712131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 15208712131 in words is "fifteen billion, two hundred eight million, seven hundred twelve thousand, one hundred thirty-one".