1331402044 has 12 divisors (see below), whose sum is σ = 2662804144. Its totient is φ = 570600864.

The previous prime is 1331402027. The next prime is 1331402053. The reversal of 1331402044 is 4402041331.

1331402044 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23775009 + ... + 23775064.

Almost surely, 2^1331402044 is an apocalyptic number.

1331402044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1331402044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1331402044 is a wasteful number, since it uses less digits than its factorization.

1331402044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47550084 (or 47550082 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1331402044 is about 36488.3823154713. The cubic root of 1331402044 is about 1100.1107447730.

Adding to 1331402044 its reverse (4402041331), we get a palindrome (5733443375).

The spelling of 1331402044 in words is "one billion, three hundred thirty-one million, four hundred two thousand, forty-four".