2172343031 has 4 divisors (see below), whose sum is σ = 2266792752. Its totient is φ = 2077893312.

The previous prime is 2172343021. The next prime is 2172343039. The reversal of 2172343031 is 1303432712.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2172343031 - 2²⁶ = 2105234167 is a prime.

It is a super-2 number, since 2×2172343031² = 9438148488668533922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172343039) 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, 47224826 + ... + 47224871.

It is an arithmetic number, because the mean of its divisors is an integer number (566698188).

Almost surely, 2^2172343031 is an apocalyptic number.

2172343031 is a deficient number, since it is larger than the sum of its proper divisors (94449721).

2172343031 is an equidigital number, since it uses as much as digits as its factorization.

2172343031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94449720.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 2172343031 is about 46608.4008629346. The cubic root of 2172343031 is about 1295.1183845501.

Adding to 2172343031 its reverse (1303432712), we get a palindrome (3475775743).

The spelling of 2172343031 in words is "two billion, one hundred seventy-two million, three hundred forty-three thousand, thirty-one".