32130091 has 4 divisors (see below), whose sum is σ = 36720112. Its totient is φ = 27540072.

The previous prime is 32130053. The next prime is 32130107. The reversal of 32130091 is 19003123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19003123 = 157 ⋅121039.

It is not a de Polignac number, because 32130091 - 2¹⁹ = 31605803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32130041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2295000 + ... + 2295013.

It is an arithmetic number, because the mean of its divisors is an integer number (9180028).

Almost surely, 2^32130091 is an apocalyptic number.

32130091 is a deficient number, since it is larger than the sum of its proper divisors (4590021).

32130091 is an equidigital number, since it uses as much as digits as its factorization.

32130091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4590020.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 32130091 is about 5668.3411153529. The cubic root of 32130091 is about 317.9098507696.

The spelling of 32130091 in words is "thirty-two million, one hundred thirty thousand, ninety-one".