1321003372 has 60 divisors (see below), whose sum is σ = 2592113216. Its totient is φ = 588444480.

The previous prime is 1321003303. The next prime is 1321003379. The reversal of 1321003372 is 2733001231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1321003379) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3541378 + ... + 3541750.

Almost surely, 2^1321003372 is an apocalyptic number.

It is an amenable number.

1321003372 is a deficient number, since it is larger than the sum of its proper divisors (1271109844).

1321003372 is an equidigital number, since it uses as much as digits as its factorization.

1321003372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 22.

The square root of 1321003372 is about 36345.6100787977. The cubic root of 1321003372 is about 1097.2391846027.

The spelling of 1321003372 in words is "one billion, three hundred twenty-one million, three thousand, three hundred seventy-two".