31232210311109 has 4 divisors (see below), whose sum is σ = 31243219200204. Its totient is φ = 31221201422016.

The previous prime is 31232210311087. The next prime is 31232210311117. The reversal of 31232210311109 is 90111301223213.

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 1117413898084 + 30114796413025 = 1057078^2 + 5487695^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232210311109 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 (31232210311009) 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, 5504440292 + ... + 5504445965.

It is an arithmetic number, because the mean of its divisors is an integer number (7810804800051).

Almost surely, 2^{31232210311109} is an apocalyptic number.

It is an amenable number.

31232210311109 is a deficient number, since it is larger than the sum of its proper divisors (11008889095).

31232210311109 is a wasteful number, since it uses less digits than its factorization.

31232210311109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11008889094.

The product of its (nonzero) digits is 1944, while the sum is 29.

The spelling of 31232210311109 in words is "thirty-one trillion, two hundred thirty-two billion, two hundred ten million, three hundred eleven thousand, one hundred nine".