331613440345 has 24 divisors (see below), whose sum is σ = 445653758088. Its totient is φ = 236622946560.

The previous prime is 331613440309. The next prime is 331613440381. The reversal of 331613440345 is 543044316133.

It is an interprime number because it is at equal distance from previous prime (331613440309) and next prime (331613440381).

It can be written as a sum of positive squares in 4 ways, for example, as 144320970816 + 187292469529 = 379896^2 + 432773^2 .

It is not a de Polignac number, because 331613440345 - 2²³ = 331605051737 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5138892 + ... + 5203021.

It is an arithmetic number, because the mean of its divisors is an integer number (18568906587).

Almost surely, 2^331613440345 is an apocalyptic number.

It is an amenable number.

331613440345 is a deficient number, since it is larger than the sum of its proper divisors (114040317743).

331613440345 is a wasteful number, since it uses less digits than its factorization.

331613440345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10341993 (or 10341982 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 37.

Adding to 331613440345 its reverse (543044316133), we get a palindrome (874657756478).

The spelling of 331613440345 in words is "three hundred thirty-one billion, six hundred thirteen million, four hundred forty thousand, three hundred forty-five".