3171139944 has 32 divisors (see below), whose sum is σ = 9060400320. Its totient is φ = 906039936.

The previous prime is 3171139921. The next prime is 3171139967. The reversal of 3171139944 is 4499311713.

It is an interprime number because it is at equal distance from previous prime (3171139921) and next prime (3171139967).

It is a super-2 number, since 2×3171139944² = 20112257088864646272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 3171139896 and 3171139905.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9437749 + ... + 9438084.

It is an arithmetic number, because the mean of its divisors is an integer number (283137510).

Almost surely, 2^3171139944 is an apocalyptic number.

It is an amenable number.

3171139944 is an abundant number, since it is smaller than the sum of its proper divisors (5889260376).

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

3171139944 is a wasteful number, since it uses less digits than its factorization.

3171139944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18875849 (or 18875845 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 3171139944 is about 56312.8754726661. The cubic root of 3171139944 is about 1469.1691579677.

The spelling of 3171139944 in words is "three billion, one hundred seventy-one million, one hundred thirty-nine thousand, nine hundred forty-four".