32112981 has 6 divisors (see below), whose sum is σ = 46385430. Its totient is φ = 21408648.

The previous prime is 32112967. The next prime is 32113001. The reversal of 32112981 is 18921123.

It can be written as a sum of positive squares in only one way, i.e., 31979025 + 133956 = 5655^2 + 366^2 .

It is not a de Polignac number, because 32112981 - 2¹⁷ = 31981909 is a prime.

It is a super-2 number, since 2×32112981² = 2062487097412722, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32112911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1784046 + ... + 1784063.

It is an arithmetic number, because the mean of its divisors is an integer number (7730905).

Almost surely, 2^32112981 is an apocalyptic number.

It is an amenable number.

32112981 is a deficient number, since it is larger than the sum of its proper divisors (14272449).

32112981 is a wasteful number, since it uses less digits than its factorization.

32112981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568115 (or 3568112 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 32112981 is about 5666.8316544609. The cubic root of 32112981 is about 317.8534093549.

The spelling of 32112981 in words is "thirty-two million, one hundred twelve thousand, nine hundred eighty-one".