3172434621 has 8 divisors (see below), whose sum is σ = 4309722720. Its totient is φ = 2075051472.

The previous prime is 3172434611. The next prime is 3172434647. The reversal of 3172434621 is 1264342713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3172434621 - 2⁷ = 3172434493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172434611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9976051 + ... + 9976368.

It is an arithmetic number, because the mean of its divisors is an integer number (538715340).

Almost surely, 2^3172434621 is an apocalyptic number.

It is an amenable number.

3172434621 is a deficient number, since it is larger than the sum of its proper divisors (1137288099).

3172434621 is a wasteful number, since it uses less digits than its factorization.

3172434621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19952475.

The product of its digits is 24192, while the sum is 33.

The square root of 3172434621 is about 56324.3696902149. The cubic root of 3172434621 is about 1469.3690693302.

The spelling of 3172434621 in words is "three billion, one hundred seventy-two million, four hundred thirty-four thousand, six hundred twenty-one".