1320232999 has 4 divisors (see below), whose sum is σ = 1350936136. Its totient is φ = 1289529864.

The previous prime is 1320232967. The next prime is 1320233023. The reversal of 1320232999 is 9992320231.

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 1320232999 - 2⁵ = 1320232967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320232909) 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, 15351504 + ... + 15351589.

It is an arithmetic number, because the mean of its divisors is an integer number (337734034).

Almost surely, 2^1320232999 is an apocalyptic number.

1320232999 is a deficient number, since it is larger than the sum of its proper divisors (30703137).

1320232999 is an equidigital number, since it uses as much as digits as its factorization.

1320232999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30703136.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 1320232999 is about 36335.0106508860. The cubic root of 1320232999 is about 1097.0258498429.

It can be divided in two parts, 1320232 and 999, that added together give a palindrome (1321231).

The spelling of 1320232999 in words is "one billion, three hundred twenty million, two hundred thirty-two thousand, nine hundred ninety-nine".