32121313 has 12 divisors (see below), whose sum is σ = 39564612. Its totient is φ = 25912320.

The previous prime is 32121307. The next prime is 32121329. The reversal of 32121313 is 31312123.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 15864289 = 4032^2 + 3983^2 .

It is not a de Polignac number, because 32121313 - 2⁹ = 32120801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32121373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18448 + ... + 20113.

It is an arithmetic number, because the mean of its divisors is an integer number (3297051).

Almost surely, 2^32121313 is an apocalyptic number.

It is an amenable number.

32121313 is a deficient number, since it is larger than the sum of its proper divisors (7443299).

32121313 is a wasteful number, since it uses less digits than its factorization.

32121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38592 (or 38585 counting only the distinct ones).

The product of its digits is 108, while the sum is 16.

The square root of 32121313 is about 5667.5667618476. The cubic root of 32121313 is about 317.8808969473.

Adding to 32121313 its reverse (31312123), we get a palindrome (63433436).

The spelling of 32121313 in words is "thirty-two million, one hundred twenty-one thousand, three hundred thirteen".