161308320 has 48 divisors (see below), whose sum is σ = 508122720. Its totient is φ = 43015424.

The previous prime is 161308313. The next prime is 161308327. The reversal of 161308320 is 23803161.

161308320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161308313) and next prime (161308327).

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (161308327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167550 + ... + 168509.

It is an arithmetic number, because the mean of its divisors is an integer number (10585890).

Almost surely, 2^161308320 is an apocalyptic number.

161308320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161308320 is an abundant number, since it is smaller than the sum of its proper divisors (346814400).

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

161308320 is a wasteful number, since it uses less digits than its factorization.

161308320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336077 (or 336069 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161308320 is about 12700.7212393627. The cubic root of 161308320 is about 544.3592278429.

The spelling of 161308320 in words is "one hundred sixty-one million, three hundred eight thousand, three hundred twenty".