161230100 has 36 divisors (see below), whose sum is σ = 350998368. Its totient is φ = 64284000.

The previous prime is 161230087. The next prime is 161230103. The reversal of 161230100 is 1032161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161230103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30665 + ... + 35535.

Almost surely, 2^161230100 is an apocalyptic number.

161230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161230100 is an abundant number, since it is smaller than the sum of its proper divisors (189768268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161230100 is a wasteful number, since it uses less digits than its factorization.

161230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5216 (or 5209 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 161230100 is about 12697.6415132890. The cubic root of 161230100 is about 544.2712252255.

Adding to 161230100 its reverse (1032161), we get a palindrome (162262261).

The spelling of 161230100 in words is "one hundred sixty-one million, two hundred thirty thousand, one hundred".