1331200402 has 64 divisors (see below), whose sum is σ = 2474634240. Its totient is φ = 524160000.

The previous prime is 1331200379. The next prime is 1331200457. The reversal of 1331200402 is 2040021331.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1898652 + ... + 1899352.

It is an arithmetic number, because the mean of its divisors is an integer number (38666160).

Almost surely, 2^1331200402 is an apocalyptic number.

1331200402 is a deficient number, since it is larger than the sum of its proper divisors (1143433838).

1331200402 is a wasteful number, since it uses less digits than its factorization.

1331200402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1331200402 is about 36485.6191121927. The cubic root of 1331200402 is about 1100.0552043920.

Adding to 1331200402 its reverse (2040021331), we get a palindrome (3371221733).

The spelling of 1331200402 in words is "one billion, three hundred thirty-one million, two hundred thousand, four hundred two".