31122130023223 has 4 divisors (see below), whose sum is σ = 31122193855768. Its totient is φ = 31122066190680.

The previous prime is 31122130023221. The next prime is 31122130023247. The reversal of 31122130023223 is 32232003122113.

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 31122130023223 - 2¹ = 31122130023221 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 (31122130023221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31179261 + ... + 32161942.

It is an arithmetic number, because the mean of its divisors is an integer number (7780548463942).

Almost surely, 2^{31122130023223} is an apocalyptic number.

31122130023223 is a deficient number, since it is larger than the sum of its proper divisors (63832545).

31122130023223 is an equidigital number, since it uses as much as digits as its factorization.

31122130023223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63832544.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 31122130023223 its reverse (32232003122113), we get a palindrome (63354133145336).

The spelling of 31122130023223 in words is "thirty-one trillion, one hundred twenty-two billion, one hundred thirty million, twenty-three thousand, two hundred twenty-three".