31332223313 has 2 divisors, whose sum is σ = 31332223314. Its totient is φ = 31332223312.

The previous prime is 31332223309. The next prime is 31332223387.

It is a happy number.

31332223313 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28536669184 + 2795554129 = 168928^2 + 52873^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 31332223313 - 2² = 31332223309 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31332223913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15666111656 + 15666111657.

It is an arithmetic number, because the mean of its divisors is an integer number (15666111657).

Almost surely, 2^31332223313 is an apocalyptic number.

It is an amenable number.

31332223313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31332223313 is an equidigital number, since it uses as much as digits as its factorization.

31332223313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 26.

The spelling of 31332223313 in words is "thirty-one billion, three hundred thirty-two million, two hundred twenty-three thousand, three hundred thirteen".