161103401 has 4 divisors (see below), whose sum is σ = 162003600. Its totient is φ = 160203204.

The previous prime is 161103389. The next prime is 161103403. The reversal of 161103401 is 104301161.

161103401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 161103401 - 2¹⁰ = 161102377 is a prime.

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 161103401.

It is not an unprimeable number, because it can be changed into a prime (161103403) 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, 449831 + ... + 450188.

It is an arithmetic number, because the mean of its divisors is an integer number (40500900).

Almost surely, 2^161103401 is an apocalyptic number.

It is an amenable number.

161103401 is a deficient number, since it is larger than the sum of its proper divisors (900199).

161103401 is an equidigital number, since it uses as much as digits as its factorization.

161103401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900198.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 161103401 is about 12692.6514566500. The cubic root of 161103401 is about 544.1286201515.

Adding to 161103401 its reverse (104301161), we get a palindrome (265404562).

The spelling of 161103401 in words is "one hundred sixty-one million, one hundred three thousand, four hundred one".