31665376666141 has 4 divisors (see below), whose sum is σ = 32262836603292. Its totient is φ = 31067916728992.

The previous prime is 31665376666139. The next prime is 31665376666151. The reversal of 31665376666141 is 14166667356613.

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 25680356921241 + 5985019744900 = 5067579^2 + 2446430^2 .

It is a cyclic number.

It is not a de Polignac number, because 31665376666141 - 2¹ = 31665376666139 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 31665376666141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31665376666111) 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, 298729968496 + ... + 298729968601.

It is an arithmetic number, because the mean of its divisors is an integer number (8065709150823).

Almost surely, 2^{31665376666141} is an apocalyptic number.

It is an amenable number.

31665376666141 is a deficient number, since it is larger than the sum of its proper divisors (597459937151).

31665376666141 is an equidigital number, since it uses as much as digits as its factorization.

31665376666141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597459937150.

The product of its digits is 58786560, while the sum is 61.

The spelling of 31665376666141 in words is "thirty-one trillion, six hundred sixty-five billion, three hundred seventy-six million, six hundred sixty-six thousand, one hundred forty-one".