15730878131 has 2 divisors, whose sum is σ = 15730878132. Its totient is φ = 15730878130.

The previous prime is 15730878103. The next prime is 15730878157. The reversal of 15730878131 is 13187803751.

15730878131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (13187803751) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15730878131 - 2¹⁴ = 15730861747 is a prime.

It is a super-2 number, since 2×15730878131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15730878101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7865439065 + 7865439066.

It is an arithmetic number, because the mean of its divisors is an integer number (7865439066).

Almost surely, 2^15730878131 is an apocalyptic number.

15730878131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15730878131 is an equidigital number, since it uses as much as digits as its factorization.

15730878131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141120, while the sum is 44.

The spelling of 15730878131 in words is "fifteen billion, seven hundred thirty million, eight hundred seventy-eight thousand, one hundred thirty-one".