3131231200 has 72 divisors (see below), whose sum is σ = 7658931672. Its totient is φ = 1250065920.

The previous prime is 3131231161. The next prime is 3131231221. The reversal of 3131231200 is 21321313.

3131231200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442087 + ... + 449113.

It is an arithmetic number, because the mean of its divisors is an integer number (106374051).

Almost surely, 2^3131231200 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3131231200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3829465836).

3131231200 is an abundant number, since it is smaller than the sum of its proper divisors (4527700472).

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

3131231200 is a wasteful number, since it uses less digits than its factorization.

3131231200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604 (or 7591 counting only the distinct ones).

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

The square root of 3131231200 is about 55957.4052293349. The cubic root of 3131231200 is about 1462.9799647067.

Adding to 3131231200 its reverse (21321313), we get a palindrome (3152552513).

The spelling of 3131231200 in words is "three billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred".