31796641 has 2 divisors, whose sum is σ = 31796642. Its totient is φ = 31796640.

The previous prime is 31796627. The next prime is 31796657. The reversal of 31796641 is 14669713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 1766241 = 5480^2 + 1329^2 .

It is an emirp because it is prime and its reverse (14669713) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31796641 - 2⁹ = 31796129 is a prime.

It is a super-2 number, since 2×31796641² = 2022052757765762, 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 31796641.

It is not a weakly prime, because it can be changed into another prime (31796041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15898320 + 15898321.

It is an arithmetic number, because the mean of its divisors is an integer number (15898321).

Almost surely, 2^31796641 is an apocalyptic number.

It is an amenable number.

31796641 is a deficient number, since it is larger than the sum of its proper divisors (1).

31796641 is an equidigital number, since it uses as much as digits as its factorization.

31796641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 31796641 is about 5638.8510354504. The cubic root of 31796641 is about 316.8062551109.

The spelling of 31796641 in words is "thirty-one million, seven hundred ninety-six thousand, six hundred forty-one".