22331220031 has 4 divisors (see below), whose sum is σ = 22332374032. Its totient is φ = 22330066032.

The previous prime is 22331220017. The next prime is 22331220061. The reversal of 22331220031 is 13002213322.

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 22331220031 - 2⁷ = 22331219903 is a prime.

It is a super-2 number, since 2×22331220031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22331219990 and 22331220008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22331220061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547470 + ... + 586843.

It is an arithmetic number, because the mean of its divisors is an integer number (5583093508).

Almost surely, 2^22331220031 is an apocalyptic number.

22331220031 is a deficient number, since it is larger than the sum of its proper divisors (1154001).

22331220031 is a wasteful number, since it uses less digits than its factorization.

22331220031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154000.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 22331220031 its reverse (13002213322), we get a palindrome (35333433353).

The spelling of 22331220031 in words is "twenty-two billion, three hundred thirty-one million, two hundred twenty thousand, thirty-one".