31283663129 has 2 divisors, whose sum is σ = 31283663130. Its totient is φ = 31283663128.

The previous prime is 31283663111. The next prime is 31283663189. The reversal of 31283663129 is 92136638213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31245865225 + 37797904 = 176765^2 + 6148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31283663129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31283663129.

It is not a weakly prime, because it can be changed into another prime (31283663189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15641831564 + 15641831565.

It is an arithmetic number, because the mean of its divisors is an integer number (15641831565).

Almost surely, 2^31283663129 is an apocalyptic number.

It is an amenable number.

31283663129 is a deficient number, since it is larger than the sum of its proper divisors (1).

31283663129 is an equidigital number, since it uses as much as digits as its factorization.

31283663129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The spelling of 31283663129 in words is "thirty-one billion, two hundred eighty-three million, six hundred sixty-three thousand, one hundred twenty-nine".