331401004004402 has 16 divisors (see below), whose sum is σ = 515998032623640. Its totient is φ = 159440661916032.

The previous prime is 331401004004387. The next prime is 331401004004417. The reversal of 331401004004402 is 204400400104133.

It is an interprime number because it is at equal distance from previous prime (331401004004387) and next prime (331401004004417).

It can be written as a sum of positive squares in 4 ways, for example, as 331234940419321 + 166063585081 = 18199861^2 + 407509^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9750512723 + ... + 9750546710.

Almost surely, 2^{331401004004402} is an apocalyptic number.

331401004004402 is a deficient number, since it is larger than the sum of its proper divisors (184597028619238).

331401004004402 is a wasteful number, since it uses less digits than its factorization.

331401004004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19501059757.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 331401004004402 its reverse (204400400104133), we get a palindrome (535801404108535).

The spelling of 331401004004402 in words is "three hundred thirty-one trillion, four hundred one billion, four million, four thousand, four hundred two".