161430206 has 32 divisors (see below), whose sum is σ = 291532800. Its totient is φ = 66943800.

The previous prime is 161430197. The next prime is 161430221. The reversal of 161430206 is 602034161.

It is a happy number.

It is a super-2 number, since 2×161430206² = 52119422818404872, which contains 22 as substring.

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, 17471 + ... + 25061.

It is an arithmetic number, because the mean of its divisors is an integer number (9110400).

Almost surely, 2^161430206 is an apocalyptic number.

161430206 is a deficient number, since it is larger than the sum of its proper divisors (130102594).

161430206 is an equidigital number, since it uses as much as digits as its factorization.

161430206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7645 (or 7631 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 161430206 is about 12705.5187221931. The cubic root of 161430206 is about 544.4963008808.

Adding to 161430206 its reverse (602034161), we get a palindrome (763464367).

The spelling of 161430206 in words is "one hundred sixty-one million, four hundred thirty thousand, two hundred six".