31102302231109 has 4 divisors (see below), whose sum is σ = 31689138122316. Its totient is φ = 30515466339904.

The previous prime is 31102302231089. The next prime is 31102302231131. The reversal of 31102302231109 is 90113220320113.

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 19772447210884 + 11329855020225 = 4446622^2 + 3365985^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31102302231109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102302231199) 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, 293417945524 + ... + 293417945629.

It is an arithmetic number, because the mean of its divisors is an integer number (7922284530579).

Almost surely, 2^{31102302231109} is an apocalyptic number.

It is an amenable number.

31102302231109 is a deficient number, since it is larger than the sum of its proper divisors (586835891207).

31102302231109 is an equidigital number, since it uses as much as digits as its factorization.

31102302231109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586835891206.

The product of its (nonzero) digits is 1944, while the sum is 28.

The spelling of 31102302231109 in words is "thirty-one trillion, one hundred two billion, three hundred two million, two hundred thirty-one thousand, one hundred nine".