331213043040442 has 12 divisors (see below), whose sum is σ = 513362983987098. Its totient is φ = 160264375663800.

The previous prime is 331213043040421. The next prime is 331213043040457. The reversal of 331213043040442 is 244040340312133.

It can be written as a sum of positive squares in only one way, i.e., 253970406729601 + 77242636310841 = 15936449^2 + 8788779^2 .

It is a junction number, because it is equal to n+sod(n) for n = 331213043040398 and 331213043040407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 86163640909 + ... + 86163644752.

Almost surely, 2^{331213043040442} is an apocalyptic number.

331213043040442 is a deficient number, since it is larger than the sum of its proper divisors (182149940946656).

331213043040442 is a wasteful number, since it uses less digits than its factorization.

331213043040442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172327285725 (or 172327285694 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

Adding to 331213043040442 its reverse (244040340312133), we get a palindrome (575253383352575).

The spelling of 331213043040442 in words is "three hundred thirty-one trillion, two hundred thirteen billion, forty-three million, forty thousand, four hundred forty-two".