22021131431 has 8 divisors (see below), whose sum is σ = 24746154720. Its totient is φ = 19443406752.

The previous prime is 22021131409. The next prime is 22021131463. The reversal of 22021131431 is 13413112022.

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

It is a cyclic number.

It is not a de Polignac number, because 22021131431 - 2⁶ = 22021131367 is a prime.

It is a super-2 number, since 2×22021131431² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021134431) 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 7 ways as a sum of consecutive naturals, for example, 36824336 + ... + 36824933.

It is an arithmetic number, because the mean of its divisors is an integer number (3093269340).

Almost surely, 2^22021131431 is an apocalyptic number.

22021131431 is a deficient number, since it is larger than the sum of its proper divisors (2725023289).

22021131431 is a wasteful number, since it uses less digits than its factorization.

22021131431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73649305.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 22021131431 its reverse (13413112022), we get a palindrome (35434243453).

The spelling of 22021131431 in words is "twenty-two billion, twenty-one million, one hundred thirty-one thousand, four hundred thirty-one".