3131200133 has 4 divisors (see below), whose sum is σ = 3296000160. Its totient is φ = 2966400108.

The previous prime is 3131200129. The next prime is 3131200139. The reversal of 3131200133 is 3310021313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3131200133 - 2² = 3131200129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131200139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82399985 + ... + 82400022.

It is an arithmetic number, because the mean of its divisors is an integer number (824000040).

Almost surely, 2^3131200133 is an apocalyptic number.

It is an amenable number.

3131200133 is a deficient number, since it is larger than the sum of its proper divisors (164800027).

3131200133 is a wasteful number, since it uses less digits than its factorization.

3131200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164800026.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 3131200133 is about 55957.1276335732. The cubic root of 3131200133 is about 1462.9751262959.

Adding to 3131200133 its reverse (3310021313), we get a palindrome (6441221446).

The spelling of 3131200133 in words is "three billion, one hundred thirty-one million, two hundred thousand, one hundred thirty-three".