31020123319998 has 8 divisors (see below), whose sum is σ = 62040246640008. Its totient is φ = 10340041106664.

The previous prime is 31020123319993. The next prime is 31020123320051. The reversal of 31020123319998 is 89991332102013.

It is a sphenic number, since it is the product of 3 distinct primes.

31020123319998 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 31020123319998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020123319993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2585010276661 + ... + 2585010276672.

It is an arithmetic number, because the mean of its divisors is an integer number (7755030830001).

Almost surely, 2^{31020123319998} is an apocalyptic number.

31020123319998 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31020123319998 is a wasteful number, since it uses less digits than its factorization.

31020123319998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5170020553338.

The product of its (nonzero) digits is 629856, while the sum is 51.

The spelling of 31020123319998 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, three hundred nineteen thousand, nine hundred ninety-eight".