31120030200 has 96 divisors (see below), whose sum is σ = 110253836160. Its totient is φ = 7113148800.

The previous prime is 31120030127. The next prime is 31120030231. The reversal of 31120030200 is 203002113.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 3700566 + ... + 3708965.

It is an arithmetic number, because the mean of its divisors is an integer number (1148477460).

Almost surely, 2^31120030200 is an apocalyptic number.

31120030200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31120030200 is an abundant number, since it is smaller than the sum of its proper divisors (79133805960).

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

31120030200 is a wasteful number, since it uses less digits than its factorization.

31120030200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409557 (or 7409548 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 31120030200 its reverse (203002113), we get a palindrome (31323032313).

The spelling of 31120030200 in words is "thirty-one billion, one hundred twenty million, thirty thousand, two hundred".