2131242431 has 2 divisors, whose sum is σ = 2131242432. Its totient is φ = 2131242430.

The previous prime is 2131242403. The next prime is 2131242437. The reversal of 2131242431 is 1342421312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2131242431 - 2³⁰ = 1057500607 is a prime.

It is a super-2 number, since 2×2131242431² = 9084388599389579522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2131242397 and 2131242406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2131242437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065621215 + 1065621216.

It is an arithmetic number, because the mean of its divisors is an integer number (1065621216).

Almost surely, 2^2131242431 is an apocalyptic number.

2131242431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2131242431 is an equidigital number, since it uses as much as digits as its factorization.

2131242431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 2131242431 is about 46165.3813046096. The cubic root of 2131242431 is about 1286.8984703289.

Adding to 2131242431 its reverse (1342421312), we get a palindrome (3473663743).

The spelling of 2131242431 in words is "two billion, one hundred thirty-one million, two hundred forty-two thousand, four hundred thirty-one".