117172144731 has 8 divisors (see below), whose sum is σ = 156432688720. Its totient is φ = 78013181952.

The previous prime is 117172144681. The next prime is 117172144759. The reversal of 117172144731 is 137441271711.

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

It is not a de Polignac number, because 117172144731 - 2¹¹ = 117172142683 is a prime.

It is a super-2 number, since 2×117172144731² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117172144731.

It is not an unprimeable number, because it can be changed into a prime (117172144231) 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, 25392610 + ... + 25397223.

It is an arithmetic number, because the mean of its divisors is an integer number (19554086090).

Almost surely, 2^117172144731 is an apocalyptic number.

117172144731 is a deficient number, since it is larger than the sum of its proper divisors (39260543989).

117172144731 is an equidigital number, since it uses as much as digits as its factorization.

117172144731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50790605.

The product of its digits is 32928, while the sum is 39.

The spelling of 117172144731 in words is "one hundred seventeen billion, one hundred seventy-two million, one hundred forty-four thousand, seven hundred thirty-one".