31662182113 has 4 divisors (see below), whose sum is σ = 31663668420. Its totient is φ = 31660695808.

The previous prime is 31662182093. The next prime is 31662182143. The reversal of 31662182113 is 31128126613.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12323664144 + 19338517969 = 111012^2 + 139063^2 .

It is a cyclic number.

It is not a de Polignac number, because 31662182113 - 2²¹ = 31660084961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31662182143) 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, 710728 + ... + 753961.

It is an arithmetic number, because the mean of its divisors is an integer number (7915917105).

Almost surely, 2^31662182113 is an apocalyptic number.

It is an amenable number.

31662182113 is a deficient number, since it is larger than the sum of its proper divisors (1486307).

31662182113 is a wasteful number, since it uses less digits than its factorization.

31662182113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486306.

The product of its digits is 10368, while the sum is 34.

The spelling of 31662182113 in words is "thirty-one billion, six hundred sixty-two million, one hundred eighty-two thousand, one hundred thirteen".