1320233131 has 4 divisors (see below), whose sum is σ = 1508837872. Its totient is φ = 1131628392.

The previous prime is 1320233129. The next prime is 1320233153. The reversal of 1320233131 is 1313320231.

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 1320233131 - 2¹ = 1320233129 is a prime.

It is a super-2 number, since 2×1320233131² = 3486031040380126322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320233099 and 1320233108.

It is not an unprimeable number, because it can be changed into a prime (1320233111) 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, 94302360 + ... + 94302373.

It is an arithmetic number, because the mean of its divisors is an integer number (377209468).

Almost surely, 2^1320233131 is an apocalyptic number.

1320233131 is a deficient number, since it is larger than the sum of its proper divisors (188604741).

1320233131 is an equidigital number, since it uses as much as digits as its factorization.

1320233131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188604740.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1320233131 is about 36335.0124673159. The cubic root of 1320233131 is about 1097.0258864040.

Adding to 1320233131 its reverse (1313320231), we get a palindrome (2633553362).

The spelling of 1320233131 in words is "one billion, three hundred twenty million, two hundred thirty-three thousand, one hundred thirty-one".