172111402731 has 8 divisors (see below), whose sum is σ = 235078989264. Its totient is φ = 111942375680.

The previous prime is 172111402711. The next prime is 172111402789. The reversal of 172111402731 is 137204111271.

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 172111402731 - 2⁶ = 172111402667 is a prime.

It is a super-2 number, since 2×172111402731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (172111402711) 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, 699639726 + ... + 699639971.

It is an arithmetic number, because the mean of its divisors is an integer number (29384873658).

Almost surely, 2^172111402731 is an apocalyptic number.

172111402731 is a deficient number, since it is larger than the sum of its proper divisors (62967586533).

172111402731 is a wasteful number, since it uses less digits than its factorization.

172111402731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399279741.

The product of its (nonzero) digits is 2352, while the sum is 30.

The spelling of 172111402731 in words is "one hundred seventy-two billion, one hundred eleven million, four hundred two thousand, seven hundred thirty-one".