31523405423 has 2 divisors, whose sum is σ = 31523405424. Its totient is φ = 31523405422.

The previous prime is 31523405401. The next prime is 31523405437. The reversal of 31523405423 is 32450432513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31523405423 - 2³⁴ = 14343536239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31523405423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31523405443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15761702711 + 15761702712.

It is an arithmetic number, because the mean of its divisors is an integer number (15761702712).

Almost surely, 2^31523405423 is an apocalyptic number.

31523405423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31523405423 is an equidigital number, since it uses as much as digits as its factorization.

31523405423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 32.

Adding to 31523405423 its reverse (32450432513), we get a palindrome (63973837936).

The spelling of 31523405423 in words is "thirty-one billion, five hundred twenty-three million, four hundred five thousand, four hundred twenty-three".