172143131 has 8 divisors (see below), whose sum is σ = 174051504. Its totient is φ = 170245600.

The previous prime is 172143113. The next prime is 172143151. The reversal of 172143131 is 131341271.

It is a happy number.

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 172143131 - 2²² = 167948827 is a prime.

It is a super-2 number, since 2×172143131² = 59266515100966322, 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 = 172143097 and 172143106.

It is not an unprimeable number, because it can be changed into a prime (172143151) 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, 31556 + ... + 36606.

It is an arithmetic number, because the mean of its divisors is an integer number (21756438).

Almost surely, 2^172143131 is an apocalyptic number.

172143131 is a deficient number, since it is larger than the sum of its proper divisors (1908373).

172143131 is a wasteful number, since it uses less digits than its factorization.

172143131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421.

The product of its digits is 504, while the sum is 23.

The square root of 172143131 is about 13120.3327320613. The cubic root of 172143131 is about 556.2839963062.

The spelling of 172143131 in words is "one hundred seventy-two million, one hundred forty-three thousand, one hundred thirty-one".