1320412331 has 4 divisors (see below), whose sum is σ = 1509042672. Its totient is φ = 1131781992.

The previous prime is 1320412319. The next prime is 1320412333. The reversal of 1320412331 is 1332140231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1320412331 - 2³⁰ = 246670507 is a prime.

It is a super-2 number, since 2×1320412331² = 3486977447713707122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320412333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94315160 + ... + 94315173.

It is an arithmetic number, because the mean of its divisors is an integer number (377260668).

Almost surely, 2^1320412331 is an apocalyptic number.

1320412331 is a deficient number, since it is larger than the sum of its proper divisors (188630341).

1320412331 is an equidigital number, since it uses as much as digits as its factorization.

1320412331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188630340.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1320412331 is about 36337.4783247269. The cubic root of 1320412331 is about 1097.0755185840.

Adding to 1320412331 its reverse (1332140231), we get a palindrome (2652552562).

The spelling of 1320412331 in words is "one billion, three hundred twenty million, four hundred twelve thousand, three hundred thirty-one".