15311514139 has 2 divisors, whose sum is σ = 15311514140. Its totient is φ = 15311514138.

The previous prime is 15311514121. The next prime is 15311514187. The reversal of 15311514139 is 93141511351.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 15311514139 - 2⁵ = 15311514107 is a prime.

It is a super-2 number, since 2×15311514139² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15311514539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7655757069 + 7655757070.

It is an arithmetic number, because the mean of its divisors is an integer number (7655757070).

Almost surely, 2^15311514139 is an apocalyptic number.

15311514139 is a deficient number, since it is larger than the sum of its proper divisors (1).

15311514139 is an equidigital number, since it uses as much as digits as its factorization.

15311514139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 34.

The spelling of 15311514139 in words is "fifteen billion, three hundred eleven million, five hundred fourteen thousand, one hundred thirty-nine".