331400231402909 has 2 divisors, whose sum is σ = 331400231402910. Its totient is φ = 331400231402908.

The previous prime is 331400231402899. The next prime is 331400231403113. The reversal of 331400231402909 is 909204132004133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324085613654884 + 7314617748025 = 18002378^2 + 2704555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331400231402909 is a prime.

It is a super-2 number, since 2×331400231402909² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331400231482909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165700115701454 + 165700115701455.

It is an arithmetic number, because the mean of its divisors is an integer number (165700115701455).

Almost surely, 2^{331400231402909} is an apocalyptic number.

It is an amenable number.

331400231402909 is a deficient number, since it is larger than the sum of its proper divisors (1).

331400231402909 is an equidigital number, since it uses as much as digits as its factorization.

331400231402909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 41.

The spelling of 331400231402909 in words is "three hundred thirty-one trillion, four hundred billion, two hundred thirty-one million, four hundred two thousand, nine hundred nine".