31100301223 has 4 divisors (see below), whose sum is σ = 31123053360. Its totient is φ = 31077549088.

The previous prime is 31100301187. The next prime is 31100301229. The reversal of 31100301223 is 32210300113.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31100301223 is a prime.

It is a super-2 number, since 2×31100301223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31100301197 and 31100301206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31100301229) 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, 11374018 + ... + 11376751.

It is an arithmetic number, because the mean of its divisors is an integer number (7780763340).

Almost surely, 2^31100301223 is an apocalyptic number.

31100301223 is a deficient number, since it is larger than the sum of its proper divisors (22752137).

31100301223 is a wasteful number, since it uses less digits than its factorization.

31100301223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22752136.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 31100301223 its reverse (32210300113), we get a palindrome (63310601336).

The spelling of 31100301223 in words is "thirty-one billion, one hundred million, three hundred one thousand, two hundred twenty-three".