31020120030300 has 72 divisors (see below), whose sum is σ = 90981020602416. Its totient is φ = 8158716495360.

The previous prime is 31020120030181. The next prime is 31020120030313. The reversal of 31020120030300 is 303002102013.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 31020120030300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 708200019 + ... + 708243818.

Almost surely, 2^{31020120030300} is an apocalyptic number.

31020120030300 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31020120030300 is an abundant number, since it is smaller than the sum of its proper divisors (59960900572116).

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

31020120030300 is a wasteful number, since it uses less digits than its factorization.

31020120030300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416443927 (or 1416443920 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 31020120030300 its reverse (303002102013), we get a palindrome (31323122132313).

The spelling of 31020120030300 in words is "thirty-one trillion, twenty billion, one hundred twenty million, thirty thousand, three hundred".