2131284431 has 2 divisors, whose sum is σ = 2131284432. Its totient is φ = 2131284430.

The previous prime is 2131284403. The next prime is 2131284433. The reversal of 2131284431 is 1344821312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131284431 - 2¹⁴ = 2131268047 is a prime.

It is a super-2 number, since 2×2131284431² = 9084746651645987522, which contains 22 as substring.

Together with 2131284433, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131284394 and 2131284403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131284433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065642215 + 1065642216.

It is an arithmetic number, because the mean of its divisors is an integer number (1065642216).

Almost surely, 2^2131284431 is an apocalyptic number.

2131284431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131284431 is an equidigital number, since it uses as much as digits as its factorization.

2131284431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608, while the sum is 29.

The square root of 2131284431 is about 46165.8361886796. The cubic root of 2131284431 is about 1286.9069238300.

The spelling of 2131284431 in words is "two billion, one hundred thirty-one million, two hundred eighty-four thousand, four hundred thirty-one".