31316463229 has 2 divisors, whose sum is σ = 31316463230. Its totient is φ = 31316463228.

The previous prime is 31316463203. The next prime is 31316463281. The reversal of 31316463229 is 92236461313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23809107204 + 7507356025 = 154302^2 + 86645^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31316463229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31316463191 and 31316463200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31316463029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15658231614 + 15658231615.

It is an arithmetic number, because the mean of its divisors is an integer number (15658231615).

Almost surely, 2^31316463229 is an apocalyptic number.

It is an amenable number.

31316463229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31316463229 is an equidigital number, since it uses as much as digits as its factorization.

31316463229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 40.

The spelling of 31316463229 in words is "thirty-one billion, three hundred sixteen million, four hundred sixty-three thousand, two hundred twenty-nine".