31122323023 has 4 divisors (see below), whose sum is σ = 33951625128. Its totient is φ = 28293020920.

The previous prime is 31122323003. The next prime is 31122323041. The reversal of 31122323023 is 32032322113.

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-31122323023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31122322985 and 31122323003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122323003) 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, 1414651036 + ... + 1414651057.

It is an arithmetic number, because the mean of its divisors is an integer number (8487906282).

Almost surely, 2^31122323023 is an apocalyptic number.

31122323023 is a deficient number, since it is larger than the sum of its proper divisors (2829302105).

31122323023 is a wasteful number, since it uses less digits than its factorization.

31122323023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2829302104.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31122323023 its reverse (32032322113), we get a palindrome (63154645136).

The spelling of 31122323023 in words is "thirty-one billion, one hundred twenty-two million, three hundred twenty-three thousand, twenty-three".