31241430431 has 2 divisors, whose sum is σ = 31241430432. Its totient is φ = 31241430430.

The previous prime is 31241430413. The next prime is 31241430433. The reversal of 31241430431 is 13403414213.

It is a happy number.

Together with previous prime (31241430413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31241430431 - 2¹⁴ = 31241414047 is a prime.

It is a super-2 number, since 2×31241430431² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 31241430433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31241430431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31241430433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15620715215 + 15620715216.

It is an arithmetic number, because the mean of its divisors is an integer number (15620715216).

Almost surely, 2^31241430431 is an apocalyptic number.

31241430431 is a deficient number, since it is larger than the sum of its proper divisors (1).

31241430431 is an equidigital number, since it uses as much as digits as its factorization.

31241430431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31241430431 its reverse (13403414213), we get a palindrome (44644844644).

The spelling of 31241430431 in words is "thirty-one billion, two hundred forty-one million, four hundred thirty thousand, four hundred thirty-one".