3172423787 has 16 divisors (see below), whose sum is σ = 3752636160. Its totient is φ = 2653640352.

The previous prime is 3172423769. The next prime is 3172423817. The reversal of 3172423787 is 7873242713.

It is a cyclic number.

It is not a de Polignac number, because 3172423787 - 2²⁶ = 3105314923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3172423757) 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, 273533 + ... + 284894.

It is an arithmetic number, because the mean of its divisors is an integer number (234539760).

Almost surely, 2^3172423787 is an apocalyptic number.

3172423787 is a deficient number, since it is larger than the sum of its proper divisors (580212373).

3172423787 is a wasteful number, since it uses less digits than its factorization.

3172423787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558482.

The product of its digits is 395136, while the sum is 44.

The square root of 3172423787 is about 56324.2735150663. The cubic root of 3172423787 is about 1469.3673966756.

The spelling of 3172423787 in words is "three billion, one hundred seventy-two million, four hundred twenty-three thousand, seven hundred eighty-seven".