31242423320 has 16 divisors (see below), whose sum is σ = 70295452560. Its totient is φ = 12496969312.

The previous prime is 31242423307. The next prime is 31242423361. The reversal of 31242423320 is 2332424213.

It is a self number, because there is not a number n which added to its sum of digits gives 31242423320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390530252 + ... + 390530331.

It is an arithmetic number, because the mean of its divisors is an integer number (4393465785).

Almost surely, 2^31242423320 is an apocalyptic number.

It is an amenable number.

31242423320 is an abundant number, since it is smaller than the sum of its proper divisors (39053029240).

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

31242423320 is a wasteful number, since it uses less digits than its factorization.

31242423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 781060594 (or 781060590 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 31242423320 its reverse (2332424213), we get a palindrome (33574847533).

The spelling of 31242423320 in words is "thirty-one billion, two hundred forty-two million, four hundred twenty-three thousand, three hundred twenty".