31100001223 has 4 divisors (see below), whose sum is σ = 31305961648. Its totient is φ = 30894040800.

The previous prime is 31100001221. The next prime is 31100001239. The reversal of 31100001223 is 32210000113.

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

It is a cyclic number.

It is not a de Polignac number, because 31100001223 - 2¹ = 31100001221 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 (31100001221) 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, 102979986 + ... + 102980287.

It is an arithmetic number, because the mean of its divisors is an integer number (7826490412).

Almost surely, 2^31100001223 is an apocalyptic number.

31100001223 is a deficient number, since it is larger than the sum of its proper divisors (205960425).

31100001223 is a wasteful number, since it uses less digits than its factorization.

31100001223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205960424.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 31100001223 its reverse (32210000113), we get a palindrome (63310001336).

The spelling of 31100001223 in words is "thirty-one billion, one hundred million, one thousand, two hundred twenty-three".