3231231131 has 4 divisors (see below), whose sum is σ = 3231539712. Its totient is φ = 3230922552.

The previous prime is 3231231121. The next prime is 3231231137. The reversal of 3231231131 is 1311321323.

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 3231231131 - 2²⁶ = 3164122267 is a prime.

It is a super-2 number, since 2×3231231131² = 20881709243887078322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3231231137) 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, 138011 + ... + 159716.

It is an arithmetic number, because the mean of its divisors is an integer number (807884928).

Almost surely, 2^3231231131 is an apocalyptic number.

3231231131 is a deficient number, since it is larger than the sum of its proper divisors (308581).

3231231131 is a wasteful number, since it uses less digits than its factorization.

3231231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308580.

The product of its digits is 324, while the sum is 20.

The square root of 3231231131 is about 56843.9190327338. The cubic root of 3231231131 is about 1478.3911069609.

Adding to 3231231131 its reverse (1311321323), we get a palindrome (4542552454).

The spelling of 3231231131 in words is "three billion, two hundred thirty-one million, two hundred thirty-one thousand, one hundred thirty-one".