22261431 has 8 divisors (see below), whose sum is σ = 30242160. Its totient is φ = 14560832.

The previous prime is 22261429. The next prime is 22261439. The reversal of 22261431 is 13416222.

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 22261431 - 2¹ = 22261429 is a prime.

It is a super-2 number, since 2×22261431² = 991142620335522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22261398 and 22261407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261439) 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, 69846 + ... + 70163.

It is an arithmetic number, because the mean of its divisors is an integer number (3780270).

Almost surely, 2^22261431 is an apocalyptic number.

22261431 is a deficient number, since it is larger than the sum of its proper divisors (7980729).

22261431 is a wasteful number, since it uses less digits than its factorization.

22261431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140065.

The product of its digits is 576, while the sum is 21.

The square root of 22261431 is about 4718.2020940184. The cubic root of 22261431 is about 281.3094744347.

Adding to 22261431 its reverse (13416222), we get a palindrome (35677653).

The spelling of 22261431 in words is "twenty-two million, two hundred sixty-one thousand, four hundred thirty-one".