31632433423609 has 2 divisors, whose sum is σ = 31632433423610. Its totient is φ = 31632433423608.

The previous prime is 31632433423607. The next prime is 31632433423711. The reversal of 31632433423609 is 90632433423613.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27821457906025 + 3810975517584 = 5274605^2 + 1952172^2 .

It is a cyclic number.

It is not a de Polignac number, because 31632433423609 - 2¹ = 31632433423607 is a prime.

It is a super-2 number, since 2×31632433423609² (a number of 28 digits) contains 22 as substring.

Together with 31632433423607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31632433423607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15816216711804 + 15816216711805.

It is an arithmetic number, because the mean of its divisors is an integer number (15816216711805).

Almost surely, 2^{31632433423609} is an apocalyptic number.

It is an amenable number.

31632433423609 is a deficient number, since it is larger than the sum of its proper divisors (1).

31632433423609 is an equidigital number, since it uses as much as digits as its factorization.

31632433423609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5038848, while the sum is 49.

The spelling of 31632433423609 in words is "thirty-one trillion, six hundred thirty-two billion, four hundred thirty-three million, four hundred twenty-three thousand, six hundred nine".