31400332322423 has 4 divisors (see below), whose sum is σ = 31400445857280. Its totient is φ = 31400218787568.

The previous prime is 31400332322363. The next prime is 31400332322477. The reversal of 31400332322423 is 32422323300413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31400332322423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31400332322423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400332922423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56351558 + ... + 56906051.

It is an arithmetic number, because the mean of its divisors is an integer number (7850111464320).

Almost surely, 2^{31400332322423} is an apocalyptic number.

31400332322423 is a deficient number, since it is larger than the sum of its proper divisors (113534857).

31400332322423 is a wasteful number, since it uses less digits than its factorization.

31400332322423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113534856.

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 31400332322423 its reverse (32422323300413), we get a palindrome (63822655622836).

The spelling of 31400332322423 in words is "thirty-one trillion, four hundred billion, three hundred thirty-two million, three hundred twenty-two thousand, four hundred twenty-three".