31122100023 has 16 divisors (see below), whose sum is σ = 47483681280. Its totient is φ = 17761733856.

The previous prime is 31122099961. The next prime is 31122100049. The reversal of 31122100023 is 32000122113.

It is not a de Polignac number, because 31122100023 - 2⁹ = 31122099511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31122099975 and 31122100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31122100123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 913003 + ... + 946476.

It is an arithmetic number, because the mean of its divisors is an integer number (2967730080).

Almost surely, 2^31122100023 is an apocalyptic number.

31122100023 is a deficient number, since it is larger than the sum of its proper divisors (16361581257).

31122100023 is a wasteful number, since it uses less digits than its factorization.

31122100023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1860286.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31122100023 its reverse (32000122113), we get a palindrome (63122222136).

The spelling of 31122100023 in words is "thirty-one billion, one hundred twenty-two million, one hundred thousand, twenty-three".