161430030 has 32 divisors (see below), whose sum is σ = 430480800. Its totient is φ = 43047936.

The previous prime is 161429999. The next prime is 161430053. The reversal of 161430030 is 30034161.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 161429985 and 161430012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298675 + ... + 299214.

It is an arithmetic number, because the mean of its divisors is an integer number (13452525).

Almost surely, 2^161430030 is an apocalyptic number.

161430030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161430030 is an abundant number, since it is smaller than the sum of its proper divisors (269050770).

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

161430030 is a wasteful number, since it uses less digits than its factorization.

161430030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597905 (or 597899 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 161430030 is about 12705.5117960671. The cubic root of 161430030 is about 544.4961030009.

Adding to 161430030 its reverse (30034161), we get a palindrome (191464191).

The spelling of 161430030 in words is "one hundred sixty-one million, four hundred thirty thousand, thirty".