2172344431 has 4 divisors (see below), whose sum is σ = 2191568832. Its totient is φ = 2153120032.

The previous prime is 2172344429. The next prime is 2172344459. The reversal of 2172344431 is 1344432712.

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 2172344431 - 2¹ = 2172344429 is a prime.

It is a super-2 number, since 2×2172344431² = 9438160653793427522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2172344393 and 2172344402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172344491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9612031 + ... + 9612256.

It is an arithmetic number, because the mean of its divisors is an integer number (547892208).

Almost surely, 2^2172344431 is an apocalyptic number.

2172344431 is a deficient number, since it is larger than the sum of its proper divisors (19224401).

2172344431 is a wasteful number, since it uses less digits than its factorization.

2172344431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19224400.

The product of its digits is 16128, while the sum is 31.

The square root of 2172344431 is about 46608.4158816839. The cubic root of 2172344431 is about 1295.1186627697.

The spelling of 2172344431 in words is "two billion, one hundred seventy-two million, three hundred forty-four thousand, four hundred thirty-one".