31662663343 has 4 divisors (see below), whose sum is σ = 31685136480. Its totient is φ = 31640190208.

The previous prime is 31662663323. The next prime is 31662663359. The reversal of 31662663343 is 34336626613.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 31662663343 - 2⁵ = 31662663311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31662663343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31662663323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11234455 + ... + 11237272.

It is an arithmetic number, because the mean of its divisors is an integer number (7921284120).

Almost surely, 2^31662663343 is an apocalyptic number.

31662663343 is a deficient number, since it is larger than the sum of its proper divisors (22473137).

31662663343 is a wasteful number, since it uses less digits than its factorization.

31662663343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473136.

The product of its digits is 839808, while the sum is 43.

The spelling of 31662663343 in words is "thirty-one billion, six hundred sixty-two million, six hundred sixty-three thousand, three hundred forty-three".