172199631 has 16 divisors (see below), whose sum is σ = 237017088. Its totient is φ = 111134400.

The previous prime is 172199609. The next prime is 172199653. The reversal of 172199631 is 136991271.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (172199609) and next prime (172199653).

It is not a de Polignac number, because 172199631 - 2⁶ = 172199567 is a prime.

It is a super-2 number, since 2×172199631² = 59305425833072322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172199631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172199431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10770 + ... + 21456.

It is an arithmetic number, because the mean of its divisors is an integer number (14813568).

Almost surely, 2^172199631 is an apocalyptic number.

172199631 is a deficient number, since it is larger than the sum of its proper divisors (64817457).

172199631 is a wasteful number, since it uses less digits than its factorization.

172199631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10862.

The product of its digits is 20412, while the sum is 39.

The square root of 172199631 is about 13122.4857020307. The cubic root of 172199631 is about 556.3448499452.

The spelling of 172199631 in words is "one hundred seventy-two million, one hundred ninety-nine thousand, six hundred thirty-one".