3181172252 has 12 divisors (see below), whose sum is σ = 5685499680. Its totient is φ = 1556743776.

The previous prime is 3181172249. The next prime is 3181172257. The reversal of 3181172252 is 2522711813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3181172257) 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, 8460377 + ... + 8460752.

It is an arithmetic number, because the mean of its divisors is an integer number (473791640).

Almost surely, 2^3181172252 is an apocalyptic number.

It is an amenable number.

3181172252 is a deficient number, since it is larger than the sum of its proper divisors (2504327428).

3181172252 is a wasteful number, since it uses less digits than its factorization.

3181172252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16921180 (or 16921178 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 3181172252 is about 56401.8816352788. The cubic root of 3181172252 is about 1470.7168287260.

The spelling of 3181172252 in words is "three billion, one hundred eighty-one million, one hundred seventy-two thousand, two hundred fifty-two".