1331890232 has 16 divisors (see below), whose sum is σ = 2522021400. Its totient is φ = 659351200.

The previous prime is 1331890229. The next prime is 1331890237. The reversal of 1331890232 is 2320981331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331890237) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 823382 + ... + 824997.

Almost surely, 2^1331890232 is an apocalyptic number.

It is an amenable number.

1331890232 is a deficient number, since it is larger than the sum of its proper divisors (1190131168).

1331890232 is a wasteful number, since it uses less digits than its factorization.

1331890232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1648486 (or 1648482 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1331890232 is about 36495.0713384698. The cubic root of 1331890232 is about 1100.2451883190.

The spelling of 1331890232 in words is "one billion, three hundred thirty-one million, eight hundred ninety thousand, two hundred thirty-two".