161143310 has 16 divisors (see below), whose sum is σ = 291797856. Its totient is φ = 64070688.

The previous prime is 161143309. The next prime is 161143321. The reversal of 161143310 is 13341161.

161143310 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161143310² = 51934332715512200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46577 + ... + 49916.

It is an arithmetic number, because the mean of its divisors is an integer number (18237366).

Almost surely, 2^161143310 is an apocalyptic number.

161143310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161143310 is a deficient number, since it is larger than the sum of its proper divisors (130654546).

161143310 is a wasteful number, since it uses less digits than its factorization.

161143310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96667.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 161143310 is about 12694.2234894459. The cubic root of 161143310 is about 544.1735474799.

Adding to 161143310 its reverse (13341161), we get a palindrome (174484471).

The spelling of 161143310 in words is "one hundred sixty-one million, one hundred forty-three thousand, three hundred ten".