1421132231 has 4 divisors (see below), whose sum is σ = 1424508264. Its totient is φ = 1417756200.

The previous prime is 1421132203. The next prime is 1421132249. The reversal of 1421132231 is 1322311241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421132231 - 2²² = 1416937927 is a prime.

It is a super-2 number, since 2×1421132231² = 4039233635974074722, which 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 (1421135231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1687385 + ... + 1688226.

It is an arithmetic number, because the mean of its divisors is an integer number (356127066).

Almost surely, 2^1421132231 is an apocalyptic number.

1421132231 is a deficient number, since it is larger than the sum of its proper divisors (3376033).

1421132231 is an equidigital number, since it uses as much as digits as its factorization.

1421132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376032.

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

The square root of 1421132231 is about 37697.9075148741. The cubic root of 1421132231 is about 1124.2895217062.

Adding to 1421132231 its reverse (1322311241), we get a palindrome (2743443472).

The spelling of 1421132231 in words is "one billion, four hundred twenty-one million, one hundred thirty-two thousand, two hundred thirty-one".