113320430161 has 3 divisors (see below), whose sum is σ = 113320766793. Its totient is φ = 113320093530.

The previous prime is 113320430149. The next prime is 113320430303. The reversal of 113320430161 is 161034023311.

The square root of 113320430161 is 336631.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 113320430161 - 2¹⁹ = 113319905873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113320430141) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 168316 + ... + 504946.

It is an arithmetic number, because the mean of its divisors is an integer number (37773588931).

Almost surely, 2^113320430161 is an apocalyptic number.

113320430161 is the 336631-st square number.

113320430161 is the 168316-th centered octagonal number.

It is an amenable number.

113320430161 is a deficient number, since it is larger than the sum of its proper divisors (336632).

113320430161 is an frugal number, since it uses more digits than its factorization.

113320430161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673262 (or 336631 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Multiplying 113320430161 by its sum of digits (25), we get a square (2833010754025 = 1683155²).

Multiplying 113320430161 by its product of nonzero digits (1296), we get a square (146863277488656 = 12118716²).

Adding to 113320430161 its reverse (161034023311), we get a palindrome (274354453472).

The spelling of 113320430161 in words is "one hundred thirteen billion, three hundred twenty million, four hundred thirty thousand, one hundred sixty-one".