32130905 has 4 divisors (see below), whose sum is σ = 38557092. Its totient is φ = 25704720.

The previous prime is 32130899. The next prime is 32130913. The reversal of 32130905 is 50903123.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50903123 = 1087 ⋅46829.

It can be written as a sum of positive squares in 2 ways, for example, as 24019801 + 8111104 = 4901^2 + 2848^2 .

It is not a de Polignac number, because 32130905 - 2²⁰ = 31082329 is a prime.

It is a super-2 number, since 2×32130905² = 2064790112238050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213086 + ... + 3213095.

It is an arithmetic number, because the mean of its divisors is an integer number (9639273).

Almost surely, 2^32130905 is an apocalyptic number.

It is an amenable number.

32130905 is a deficient number, since it is larger than the sum of its proper divisors (6426187).

32130905 is an equidigital number, since it uses as much as digits as its factorization.

32130905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6426186.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 32130905 is about 5668.4129172106. The cubic root of 32130905 is about 317.9125354434.

The spelling of 32130905 in words is "thirty-two million, one hundred thirty thousand, nine hundred five".