1331250432 has 36 divisors (see below), whose sum is σ = 3543069600. Its totient is φ = 443749888.

The previous prime is 1331250413. The next prime is 1331250461. The reversal of 1331250432 is 2340521331.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 865932 + ... + 867467.

It is an arithmetic number, because the mean of its divisors is an integer number (98418600).

Almost surely, 2^1331250432 is an apocalyptic number.

1331250432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1331250432 is an abundant number, since it is smaller than the sum of its proper divisors (2211819168).

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

1331250432 is an equidigital number, since it uses as much as digits as its factorization.

1331250432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733418 (or 1733404 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1331250432 is about 36486.3047183460. The cubic root of 1331250432 is about 1100.0689852053.

Adding to 1331250432 its reverse (2340521331), we get a palindrome (3671771763).

The spelling of 1331250432 in words is "one billion, three hundred thirty-one million, two hundred fifty thousand, four hundred thirty-two".