161134320 has 80 divisors (see below), whose sum is σ = 521252352. Its totient is φ = 41099520.

The previous prime is 161134319. The next prime is 161134321. The reversal of 161134320 is 23431161.

It is an interprime number because it is at equal distance from previous prime (161134319) and next prime (161134321).

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161134321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9076 + ... + 20115.

Almost surely, 2^161134320 is an apocalyptic number.

161134320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161134320 is an abundant number, since it is smaller than the sum of its proper divisors (360118032).

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

161134320 is a wasteful number, since it uses less digits than its factorization.

161134320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29230 (or 29224 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 161134320 is about 12693.8693864401. The cubic root of 161134320 is about 544.1634276862.

Adding to 161134320 its reverse (23431161), we get a palindrome (184565481).

The spelling of 161134320 in words is "one hundred sixty-one million, one hundred thirty-four thousand, three hundred twenty".