31321007118829 has 2 divisors, whose sum is σ = 31321007118830. Its totient is φ = 31321007118828.

The previous prime is 31321007118811. The next prime is 31321007118839. The reversal of 31321007118829 is 92881170012313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29053964969929 + 2267042148900 = 5390173^2 + 1505670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31321007118829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31321007118809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660503559414 + 15660503559415.

It is an arithmetic number, because the mean of its divisors is an integer number (15660503559415).

Almost surely, 2^{31321007118829} is an apocalyptic number.

It is an amenable number.

31321007118829 is a deficient number, since it is larger than the sum of its proper divisors (1).

31321007118829 is an equidigital number, since it uses as much as digits as its factorization.

31321007118829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 46.

The spelling of 31321007118829 in words is "thirty-one trillion, three hundred twenty-one billion, seven million, one hundred eighteen thousand, eight hundred twenty-nine".