15122543131 has 2 divisors, whose sum is σ = 15122543132. Its totient is φ = 15122543130.

The previous prime is 15122543089. The next prime is 15122543141. The reversal of 15122543131 is 13134522151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15122543131 - 2⁷ = 15122543003 is a prime.

It is a super-2 number, since 2×15122543131² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15122543131.

It is not a weakly prime, because it can be changed into another prime (15122543141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561271565 + 7561271566.

It is an arithmetic number, because the mean of its divisors is an integer number (7561271566).

Almost surely, 2^15122543131 is an apocalyptic number.

15122543131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122543131 is an equidigital number, since it uses as much as digits as its factorization.

15122543131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3600, while the sum is 28.

The spelling of 15122543131 in words is "fifteen billion, one hundred twenty-two million, five hundred forty-three thousand, one hundred thirty-one".