161501703 has 32 divisors (see below), whose sum is σ = 241401600. Its totient is φ = 95212800.

The previous prime is 161501701. The next prime is 161501713. The reversal of 161501703 is 307105161.

It is not a de Polignac number, because 161501703 - 2¹ = 161501701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161501701) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211843 + ... + 212603.

It is an arithmetic number, because the mean of its divisors is an integer number (7543800).

Almost surely, 2^161501703 is an apocalyptic number.

161501703 is a deficient number, since it is larger than the sum of its proper divisors (79899897).

161501703 is a wasteful number, since it uses less digits than its factorization.

161501703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 161501703 is about 12708.3320306010. The cubic root of 161501703 is about 544.5766743274.

Adding to 161501703 its reverse (307105161), we get a palindrome (468606864).

The spelling of 161501703 in words is "one hundred sixty-one million, five hundred one thousand, seven hundred three".