31331214029 has 2 divisors, whose sum is σ = 31331214030. Its totient is φ = 31331214028.

The previous prime is 31331214023. The next prime is 31331214067. The reversal of 31331214029 is 92041213313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30485858404 + 845355625 = 174602^2 + 29075^2 .

It is a cyclic number.

It is not a de Polignac number, because 31331214029 - 2⁸ = 31331213773 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31331213992 and 31331214010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31331214023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15665607014 + 15665607015.

It is an arithmetic number, because the mean of its divisors is an integer number (15665607015).

Almost surely, 2^31331214029 is an apocalyptic number.

It is an amenable number.

31331214029 is a deficient number, since it is larger than the sum of its proper divisors (1).

31331214029 is an equidigital number, since it uses as much as digits as its factorization.

31331214029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 31331214029 in words is "thirty-one billion, three hundred thirty-one million, two hundred fourteen thousand, twenty-nine".