1321232995 has 16 divisors (see below), whose sum is σ = 1625430240. Its totient is φ = 1030393600.

The previous prime is 1321232981. The next prime is 1321233019. The reversal of 1321232995 is 5992321231.

It is a happy number.

It is not a de Polignac number, because 1321232995 - 2⁷ = 1321232867 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502785 + ... + 505405.

It is an arithmetic number, because the mean of its divisors is an integer number (101589390).

Almost surely, 2^1321232995 is an apocalyptic number.

1321232995 is a deficient number, since it is larger than the sum of its proper divisors (304197245).

1321232995 is a wasteful number, since it uses less digits than its factorization.

1321232995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126.

The product of its digits is 29160, while the sum is 37.

The square root of 1321232995 is about 36348.7688237167. The cubic root of 1321232995 is about 1097.3027566726.

The spelling of 1321232995 in words is "one billion, three hundred twenty-one million, two hundred thirty-two thousand, nine hundred ninety-five".