1427945231 has 4 divisors (see below), whose sum is σ = 1429064712. Its totient is φ = 1426825752.

The previous prime is 1427945227. The next prime is 1427945251. The reversal of 1427945231 is 1325497241.

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 1427945231 - 2² = 1427945227 is a prime.

It is a super-2 number, since 2×1427945231² = 4078055165471286722, 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 (1427945251) 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 3 ways as a sum of consecutive naturals, for example, 557825 + ... + 560378.

It is an arithmetic number, because the mean of its divisors is an integer number (357266178).

Almost surely, 2^1427945231 is an apocalyptic number.

1427945231 is a deficient number, since it is larger than the sum of its proper divisors (1119481).

1427945231 is a wasteful number, since it uses less digits than its factorization.

1427945231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119480.

The product of its digits is 60480, while the sum is 38.

The square root of 1427945231 is about 37788.1625777174. The cubic root of 1427945231 is about 1126.0832971998.

The spelling of 1427945231 in words is "one billion, four hundred twenty-seven million, nine hundred forty-five thousand, two hundred thirty-one".