2431431131231 has 4 divisors (see below), whose sum is σ = 2431574841264. Its totient is φ = 2431287421200.

The previous prime is 2431431131221. The next prime is 2431431131249. The reversal of 2431431131231 is 1321311341342.

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 2431431131231 - 2⁶ = 2431431131167 is a prime.

It is a super-2 number, since 2×2431431131231² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2431431131194 and 2431431131203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2431431131221) 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, 71829635 + ... + 71863476.

It is an arithmetic number, because the mean of its divisors is an integer number (607893710316).

Almost surely, 2^{2431431131231} is an apocalyptic number.

2431431131231 is a deficient number, since it is larger than the sum of its proper divisors (143710033).

2431431131231 is a wasteful number, since it uses less digits than its factorization.

2431431131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143710032.

The product of its digits is 5184, while the sum is 29.

Adding to 2431431131231 its reverse (1321311341342), we get a palindrome (3752742472573).

The spelling of 2431431131231 in words is "two trillion, four hundred thirty-one billion, four hundred thirty-one million, one hundred thirty-one thousand, two hundred thirty-one".