172470100931 has 4 divisors (see below), whose sum is σ = 172471563000. Its totient is φ = 172468638864.

The previous prime is 172470100903. The next prime is 172470100973. The reversal of 172470100931 is 139001074271.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 172470100931 - 2²⁶ = 172402992067 is a prime.

It is a super-2 number, since 2×172470100931² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 172470100891 and 172470100900.

It is not an unprimeable number, because it can be changed into a prime (172470100981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 536906 + ... + 795743.

It is an arithmetic number, because the mean of its divisors is an integer number (43117890750).

Almost surely, 2^172470100931 is an apocalyptic number.

172470100931 is a deficient number, since it is larger than the sum of its proper divisors (1462069).

172470100931 is a wasteful number, since it uses less digits than its factorization.

172470100931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462068.

The product of its (nonzero) digits is 10584, while the sum is 35.

The spelling of 172470100931 in words is "one hundred seventy-two billion, four hundred seventy million, one hundred thousand, nine hundred thirty-one".