15847803131 has 2 divisors, whose sum is σ = 15847803132. Its totient is φ = 15847803130.

The previous prime is 15847803071. The next prime is 15847803133. The reversal of 15847803131 is 13130874851.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15847803131 - 2¹⁸ = 15847540987 is a prime.

It is a super-2 number, since 2×15847803131² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 15847803133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15847803133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7923901565 + 7923901566.

It is an arithmetic number, because the mean of its divisors is an integer number (7923901566).

Almost surely, 2^15847803131 is an apocalyptic number.

15847803131 is a deficient number, since it is larger than the sum of its proper divisors (1).

15847803131 is an equidigital number, since it uses as much as digits as its factorization.

15847803131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The spelling of 15847803131 in words is "fifteen billion, eight hundred forty-seven million, eight hundred three thousand, one hundred thirty-one".