1232343131 has 4 divisors (see below), whose sum is σ = 1232502192. Its totient is φ = 1232184072.

The previous prime is 1232343113. The next prime is 1232343157. The reversal of 1232343131 is 1313432321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1313432321 = 163 ⋅8057867.

It is a cyclic number.

It is not a de Polignac number, because 1232343131 - 2⁶ = 1232343067 is a prime.

It is a super-2 number, since 2×1232343131² = 3037339185045766322, 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 = 1232343097 and 1232343106.

It is not an unprimeable number, because it can be changed into a prime (1232333131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67280 + ... + 83613.

It is an arithmetic number, because the mean of its divisors is an integer number (308125548).

Almost surely, 2^1232343131 is an apocalyptic number.

1232343131 is a deficient number, since it is larger than the sum of its proper divisors (159061).

1232343131 is an equidigital number, since it uses as much as digits as its factorization.

1232343131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159060.

The product of its digits is 1296, while the sum is 23.

The square root of 1232343131 is about 35104.7451350953. The cubic root of 1232343131 is about 1072.1211978119.

Adding to 1232343131 its reverse (1313432321), we get a palindrome (2545775452).

The spelling of 1232343131 in words is "one billion, two hundred thirty-two million, three hundred forty-three thousand, one hundred thirty-one".