32123681 has 2 divisors, whose sum is σ = 32123682. Its totient is φ = 32123680.

The previous prime is 32123629. The next prime is 32123687. The reversal of 32123681 is 18632123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17986081 + 14137600 = 4241^2 + 3760^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32123681 is a prime.

It is a super-2 number, since 2×32123681² = 2063861761979522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 32123681.

It is not a weakly prime, because it can be changed into another prime (32123687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16061840 + 16061841.

It is an arithmetic number, because the mean of its divisors is an integer number (16061841).

Almost surely, 2^32123681 is an apocalyptic number.

It is an amenable number.

32123681 is a deficient number, since it is larger than the sum of its proper divisors (1).

32123681 is an equidigital number, since it uses as much as digits as its factorization.

32123681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

The square root of 32123681 is about 5667.7756659910. The cubic root of 32123681 is about 317.8887082040. Note that the first 3 decimals are identical.

The spelling of 32123681 in words is "thirty-two million, one hundred twenty-three thousand, six hundred eighty-one".