22320220031231 has 4 divisors (see below), whose sum is σ = 22320352704000. Its totient is φ = 22320087358464.

The previous prime is 22320220031203. The next prime is 22320220031257. The reversal of 22320220031231 is 13213002202322.

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 22320220031231 - 2¹⁴ = 22320220014847 is a prime.

It is a super-3 number, since 3×22320220031231³ (a number of 41 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 junction number, because it is equal to n+sod(n) for n = 22320220031197 and 22320220031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320220031201) 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, 66083711 + ... + 66420608.

It is an arithmetic number, because the mean of its divisors is an integer number (5580088176000).

Almost surely, 2^{22320220031231} is an apocalyptic number.

22320220031231 is a deficient number, since it is larger than the sum of its proper divisors (132672769).

22320220031231 is a wasteful number, since it uses less digits than its factorization.

22320220031231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132672768.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 22320220031231 its reverse (13213002202322), we get a palindrome (35533222233553).

The spelling of 22320220031231 in words is "twenty-two trillion, three hundred twenty billion, two hundred twenty million, thirty-one thousand, two hundred thirty-one".