31323340422 has 72 divisors (see below), whose sum is σ = 74874552480. Its totient is φ = 9456717600.

The previous prime is 31323340409. The next prime is 31323340459. The reversal of 31323340422 is 22404332313.

31323340422 is a `hidden beast` number, since 3 + 1 + 3 + 233 + 4 + 0 + 422 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 563704 + ... + 616772.

It is an arithmetic number, because the mean of its divisors is an integer number (1039924340).

Almost surely, 2^31323340422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31323340422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37437276240).

31323340422 is an abundant number, since it is smaller than the sum of its proper divisors (43551212058).

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

31323340422 is a wasteful number, since it uses less digits than its factorization.

31323340422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53370 (or 53356 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 31323340422 its reverse (22404332313), we get a palindrome (53727672735).

The spelling of 31323340422 in words is "thirty-one billion, three hundred twenty-three million, three hundred forty thousand, four hundred twenty-two".