172027731 has 8 divisors (see below), whose sum is σ = 229711824. Its totient is φ = 114514400.

The previous prime is 172027727. The next prime is 172027769. The reversal of 172027731 is 137720271.

172027731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 172027731 - 2² = 172027727 is a prime.

It is a super-2 number, since 2×172027731² = 59187080466016722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172027781) 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, 40320 + ... + 44381.

It is an arithmetic number, because the mean of its divisors is an integer number (28713978).

Almost surely, 2^172027731 is an apocalyptic number.

172027731 is a deficient number, since it is larger than the sum of its proper divisors (57684093).

172027731 is an equidigital number, since it uses as much as digits as its factorization.

172027731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85381.

The product of its (nonzero) digits is 4116, while the sum is 30.

The square root of 172027731 is about 13115.9342404573. The cubic root of 172027731 is about 556.1596627104.

The spelling of 172027731 in words is "one hundred seventy-two million, twenty-seven thousand, seven hundred thirty-one".