31635457423 has 2 divisors, whose sum is σ = 31635457424. Its totient is φ = 31635457422.

The previous prime is 31635457393. The next prime is 31635457487. The reversal of 31635457423 is 32475453613.

It is a weak prime.

It is an emirp because it is prime and its reverse (32475453613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31635457423 - 2²⁵ = 31601902991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31635457423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31635457123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15817728711 + 15817728712.

It is an arithmetic number, because the mean of its divisors is an integer number (15817728712).

Almost surely, 2^31635457423 is an apocalyptic number.

31635457423 is a deficient number, since it is larger than the sum of its proper divisors (1).

31635457423 is an equidigital number, since it uses as much as digits as its factorization.

31635457423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 907200, while the sum is 43.

The spelling of 31635457423 in words is "thirty-one billion, six hundred thirty-five million, four hundred fifty-seven thousand, four hundred twenty-three".