3240131231 has 4 divisors (see below), whose sum is σ = 3319158864. Its totient is φ = 3161103600.

The previous prime is 3240131197. The next prime is 3240131281. The reversal of 3240131231 is 1321310423.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1321310423 = 3539 ⋅373357.

It is a cyclic number.

It is not a de Polignac number, because 3240131231 - 2¹⁰ = 3240130207 is a prime.

It is a super-2 number, since 2×3240131231² = 20996900788203150722, 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 (3240131281) 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, 39513755 + ... + 39513836.

It is an arithmetic number, because the mean of its divisors is an integer number (829789716).

Almost surely, 2^3240131231 is an apocalyptic number.

3240131231 is a deficient number, since it is larger than the sum of its proper divisors (79027633).

3240131231 is an equidigital number, since it uses as much as digits as its factorization.

3240131231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79027632.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 3240131231 is about 56922.1506181908. The cubic root of 3240131231 is about 1479.7472223210.

Adding to 3240131231 its reverse (1321310423), we get a palindrome (4561441654).

The spelling of 3240131231 in words is "three billion, two hundred forty million, one hundred thirty-one thousand, two hundred thirty-one".