22311320231 has 8 divisors (see below), whose sum is σ = 22374761760. Its totient is φ = 22247910688.

The previous prime is 22311320159. The next prime is 22311320243. The reversal of 22311320231 is 13202311322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22311320231 is a prime.

It is a super-3 number, since 3×22311320231³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22311323231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2300765 + ... + 2310441.

It is an arithmetic number, because the mean of its divisors is an integer number (2796845220).

Almost surely, 2^22311320231 is an apocalyptic number.

22311320231 is a deficient number, since it is larger than the sum of its proper divisors (63441529).

22311320231 is an equidigital number, since it uses as much as digits as its factorization.

22311320231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15993.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 22311320231 its reverse (13202311322), we get a palindrome (35513631553).

The spelling of 22311320231 in words is "twenty-two billion, three hundred eleven million, three hundred twenty thousand, two hundred thirty-one".