172310131313842 has 4 divisors (see below), whose sum is σ = 258465196970766. Its totient is φ = 86155065656920.

The previous prime is 172310131313839. The next prime is 172310131313849. The reversal of 172310131313842 is 248313131013271.

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

It can be written as a sum of positive squares in only one way, i.e., 118716736109841 + 53593395204001 = 10895721^2 + 7320751^2 .

It is a junction number, because it is equal to n+sod(n) for n = 172310131313795 and 172310131313804.

It is not an unprimeable number, because it can be changed into a prime (172310131313849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43077532828459 + ... + 43077532828462.

Almost surely, 2^{172310131313842} is an apocalyptic number.

172310131313842 is a deficient number, since it is larger than the sum of its proper divisors (86155065656924).

172310131313842 is an equidigital number, since it uses as much as digits as its factorization.

172310131313842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86155065656923.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 172310131313842 in words is "one hundred seventy-two trillion, three hundred ten billion, one hundred thirty-one million, three hundred thirteen thousand, eight hundred forty-two".