1431222231 has 16 divisors (see below), whose sum is σ = 2032660224. Its totient is φ = 892639104.

The previous prime is 1431222227. The next prime is 1431222241. The reversal of 1431222231 is 1322221341.

It is not a de Polignac number, because 1431222231 - 2² = 1431222227 is a prime.

It is a super-2 number, since 2×1431222231² = 4096794149017234722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1431222198 and 1431222207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431222241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75505 + ... + 92538.

It is an arithmetic number, because the mean of its divisors is an integer number (127041264).

Almost surely, 2^1431222231 is an apocalyptic number.

1431222231 is a deficient number, since it is larger than the sum of its proper divisors (601437993).

1431222231 is a wasteful number, since it uses less digits than its factorization.

1431222231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168230.

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

The square root of 1431222231 is about 37831.4978688394. The cubic root of 1431222231 is about 1126.9440574984.

Adding to 1431222231 its reverse (1322221341), we get a palindrome (2753443572).

The spelling of 1431222231 in words is "one billion, four hundred thirty-one million, two hundred twenty-two thousand, two hundred thirty-one".