31133200120 has 64 divisors (see below), whose sum is σ = 80439868800. Its totient is φ = 10725310080.

The previous prime is 31133200097. The next prime is 31133200127. The reversal of 31133200120 is 2100233113.

It is a super-2 number, since 2×31133200120² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31133200094 and 31133200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133200127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1853674 + ... + 1870393.

It is an arithmetic number, because the mean of its divisors is an integer number (1256872950).

Almost surely, 2^31133200120 is an apocalyptic number.

It is an amenable number.

31133200120 is an abundant number, since it is smaller than the sum of its proper divisors (49306668680).

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

31133200120 is a wasteful number, since it uses less digits than its factorization.

31133200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3724108 (or 3724104 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31133200120 its reverse (2100233113), we get a palindrome (33233433233).

The spelling of 31133200120 in words is "thirty-one billion, one hundred thirty-three million, two hundred thousand, one hundred twenty".