31423214032 has 80 divisors (see below), whose sum is σ = 71270438400. Its totient is φ = 13143208320.

The previous prime is 31423214029. The next prime is 31423214083. The reversal of 31423214032 is 23041232413.

It is a junction number, because it is equal to n+sod(n) for n = 31423213988 and 31423214006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 901407 + ... + 935617.

It is an arithmetic number, because the mean of its divisors is an integer number (890880480).

Almost surely, 2^31423214032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31423214032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35635219200).

31423214032 is an abundant number, since it is smaller than the sum of its proper divisors (39847224368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423214032 is a wasteful number, since it uses less digits than its factorization.

31423214032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34424 (or 34418 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 31423214032 its reverse (23041232413), we get a palindrome (54464446445).

The spelling of 31423214032 in words is "thirty-one billion, four hundred twenty-three million, two hundred fourteen thousand, thirty-two".