31210403423 has 2 divisors, whose sum is σ = 31210403424. Its totient is φ = 31210403422.

The previous prime is 31210403387. The next prime is 31210403443. The reversal of 31210403423 is 32430401213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31210403423 - 2¹⁸ = 31210141279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31210403443) 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, 15605201711 + 15605201712.

It is an arithmetic number, because the mean of its divisors is an integer number (15605201712).

Almost surely, 2^31210403423 is an apocalyptic number.

31210403423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31210403423 is an equidigital number, since it uses as much as digits as its factorization.

31210403423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31210403423 its reverse (32430401213), we get a palindrome (63640804636).

The spelling of 31210403423 in words is "thirty-one billion, two hundred ten million, four hundred three thousand, four hundred twenty-three".