3172431 has 4 divisors (see below), whose sum is σ = 4229912. Its totient is φ = 2114952.

The previous prime is 3172423. The next prime is 3172439. The reversal of 3172431 is 1342713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1342713 = 3 ⋅447571.

It is an interprime number because it is at equal distance from previous prime (3172423) and next prime (3172439).

It is not a de Polignac number, because 3172431 - 2³ = 3172423 is a prime.

It is a super-2 number, since 2×3172431² = 20128636899522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3172398 and 3172407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3172439) 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, 528736 + ... + 528741.

It is an arithmetic number, because the mean of its divisors is an integer number (1057478).

Almost surely, 2^3172431 is an apocalyptic number.

3172431 is a deficient number, since it is larger than the sum of its proper divisors (1057481).

3172431 is a wasteful number, since it uses less digits than its factorization.

3172431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057480.

The product of its digits is 504, while the sum is 21.

The square root of 3172431 is about 1781.1319434562. The cubic root of 3172431 is about 146.9368510287.

The spelling of 3172431 in words is "three million, one hundred seventy-two thousand, four hundred thirty-one".