1331023420402 has 16 divisors (see below), whose sum is σ = 2150424017280. Its totient is φ = 614230141392.

The previous prime is 1331023420387. The next prime is 1331023420429. The reversal of 1331023420402 is 2040243201331.

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, 3497268 + ... + 3859135.

It is an arithmetic number, because the mean of its divisors is an integer number (134401501080).

Almost surely, 2^{1331023420402} is an apocalyptic number.

1331023420402 is a deficient number, since it is larger than the sum of its proper divisors (819400596878).

1331023420402 is a wasteful number, since it uses less digits than its factorization.

1331023420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7363377.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 1331023420402 its reverse (2040243201331), we get a palindrome (3371266621733).

The spelling of 1331023420402 in words is "one trillion, three hundred thirty-one billion, twenty-three million, four hundred twenty thousand, four hundred two".