2221231431 has 8 divisors (see below), whose sum is σ = 3017522160. Its totient is φ = 1452880832.

The previous prime is 2221231409. The next prime is 2221231459. The reversal of 2221231431 is 1341321222.

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 2221231431 - 2⁵ = 2221231399 is a prime.

It is a super-2 number, since 2×2221231431² = 9867738140124615522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2221231398 and 2221231407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221231531) 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, 6984846 + ... + 6985163.

It is an arithmetic number, because the mean of its divisors is an integer number (377190270).

Almost surely, 2^2221231431 is an apocalyptic number.

2221231431 is a deficient number, since it is larger than the sum of its proper divisors (796290729).

2221231431 is a wasteful number, since it uses less digits than its factorization.

2221231431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13970065.

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

The square root of 2221231431 is about 47129.9419795951. The cubic root of 2221231431 is about 1304.7619107345.

Adding to 2221231431 its reverse (1341321222), we get a palindrome (3562552653).

The spelling of 2221231431 in words is "two billion, two hundred twenty-one million, two hundred thirty-one thousand, four hundred thirty-one".