31020123320000 has 70 divisors (see below), whose sum is σ = 76919824392708. Its totient is φ = 12408049312000.

The previous prime is 31020123319993. The next prime is 31020123320051. The reversal of 31020123320000 is 2332102013.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 387711542 + ... + 387791541.

Almost surely, 2^{31020123320000} is an apocalyptic number.

It is an amenable number.

31020123320000 is an abundant number, since it is smaller than the sum of its proper divisors (45899701072708).

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

31020123320000 is an frugal number, since it uses more digits than its factorization.

31020123320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775503115 (or 775503090 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31020123320000 its reverse (2332102013), we get a palindrome (31022455422013).

The spelling of 31020123320000 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, three hundred twenty thousand".