22001234230431 has 8 divisors (see below), whose sum is σ = 32594421082160. Its totient is φ = 14667489486936.

The previous prime is 22001234230421. The next prime is 22001234230453. The reversal of 22001234230431 is 13403243210022.

22001234230431 is a `hidden beast` number, since 2 + 2 + 0 + 0 + 12 + 342 + 304 + 3 + 1 = 666.

It is not a de Polignac number, because 22001234230431 - 2²² = 22001230036127 is a prime.

It is a super-2 number, since 2×22001234230431² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 814860527053 = 22001234230431 / (2 + 2 + 0 + 0 + 1 + 2 + 3 + 4 + 2 + 3 + 0 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22001234230395 and 22001234230404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001234230421) 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, 407430263500 + ... + 407430263553.

It is an arithmetic number, because the mean of its divisors is an integer number (4074302635270).

Almost surely, 2^{22001234230431} is an apocalyptic number.

22001234230431 is a deficient number, since it is larger than the sum of its proper divisors (10593186851729).

22001234230431 is an equidigital number, since it uses as much as digits as its factorization.

22001234230431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 814860527062 (or 814860527056 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 22001234230431 its reverse (13403243210022), we get a palindrome (35404477440453).

It can be divided in two parts, 22001 and 234230431, that added together give a palindrome (234252432).

The spelling of 22001234230431 in words is "twenty-two trillion, one billion, two hundred thirty-four million, two hundred thirty thousand, four hundred thirty-one".