170423001321 has 16 divisors (see below), whose sum is σ = 227598081984. Its totient is φ = 113431754304.

The previous prime is 170423001319. The next prime is 170423001367. The reversal of 170423001321 is 123100324071.

It is a happy number.

It is not a de Polignac number, because 170423001321 - 2¹ = 170423001319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 170423001291 and 170423001300.

It is not an unprimeable number, because it can be changed into a prime (170423001121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5950191 + ... + 5978763.

It is an arithmetic number, because the mean of its divisors is an integer number (14224880124).

Almost surely, 2^170423001321 is an apocalyptic number.

It is an amenable number.

170423001321 is a deficient number, since it is larger than the sum of its proper divisors (57175080663).

170423001321 is a wasteful number, since it uses less digits than its factorization.

170423001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31720.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 170423001321 its reverse (123100324071), we get a palindrome (293523325392).

The spelling of 170423001321 in words is "one hundred seventy billion, four hundred twenty-three million, one thousand, three hundred twenty-one".