2131233031 has 4 divisors (see below), whose sum is σ = 2131693200. Its totient is φ = 2130772864.

The previous prime is 2131233023. The next prime is 2131233047. The reversal of 2131233031 is 1303321312.

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 2131233031 - 2³ = 2131233023 is a prime.

It is a super-2 number, since 2×2131233031² = 9084308464850893922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131233011) 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, 223066 + ... + 232423.

It is an arithmetic number, because the mean of its divisors is an integer number (532923300).

Almost surely, 2^2131233031 is an apocalyptic number.

2131233031 is a deficient number, since it is larger than the sum of its proper divisors (460169).

2131233031 is an equidigital number, since it uses as much as digits as its factorization.

2131233031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460168.

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

The square root of 2131233031 is about 46165.2794966087. The cubic root of 2131233031 is about 1286.8965783397.

Adding to 2131233031 its reverse (1303321312), we get a palindrome (3434554343).

The spelling of 2131233031 in words is "two billion, one hundred thirty-one million, two hundred thirty-three thousand, thirty-one".