31101223211123 has 4 divisors (see below), whose sum is σ = 33493624996608. Its totient is φ = 28708821425640.

The previous prime is 31101223211087. The next prime is 31101223211129. The reversal of 31101223211123 is 32111232210113.

It is a happy number.

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 31101223211123 - 2²⁰ = 31101222162547 is a prime.

It is a super-2 number, since 2×31101223211123² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31101223211129) 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, 1196200892723 + ... + 1196200892748.

It is an arithmetic number, because the mean of its divisors is an integer number (8373406249152).

Almost surely, 2^{31101223211123} is an apocalyptic number.

31101223211123 is a deficient number, since it is larger than the sum of its proper divisors (2392401785485).

31101223211123 is a wasteful number, since it uses less digits than its factorization.

31101223211123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392401785484.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31101223211123 its reverse (32111232210113), we get a palindrome (63212455421236).

The spelling of 31101223211123 in words is "thirty-one trillion, one hundred one billion, two hundred twenty-three million, two hundred eleven thousand, one hundred twenty-three".