172340231 has 8 divisors (see below), whose sum is σ = 197228544. Its totient is φ = 147519000.

The previous prime is 172340221. The next prime is 172340249. The reversal of 172340231 is 132043271.

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

It is a cyclic number.

It is not a de Polignac number, because 172340231 - 2⁶ = 172340167 is a prime.

It is a super-2 number, since 2×172340231² = 59402310442266722, 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 = 172340197 and 172340206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172340221) 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, 11135 + ... + 21648.

It is an arithmetic number, because the mean of its divisors is an integer number (24653568).

Almost surely, 2^172340231 is an apocalyptic number.

172340231 is a deficient number, since it is larger than the sum of its proper divisors (24888313).

172340231 is an equidigital number, since it uses as much as digits as its factorization.

172340231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33541.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 172340231 is about 13127.8418256772. The cubic root of 172340231 is about 556.4962262011.

The spelling of 172340231 in words is "one hundred seventy-two million, three hundred forty thousand, two hundred thirty-one".