1420427231 has 16 divisors (see below), whose sum is σ = 1516631040. Its totient is φ = 1325683200.

The previous prime is 1420427227. The next prime is 1420427237. The reversal of 1420427231 is 1327240241.

It is a cyclic number.

It is not a de Polignac number, because 1420427231 - 2² = 1420427227 is a prime.

It is a super-2 number, since 2×1420427231² = 4035227037132654722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1420427231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420427237) 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, 1233506 + ... + 1234656.

It is an arithmetic number, because the mean of its divisors is an integer number (94789440).

Almost surely, 2^1420427231 is an apocalyptic number.

1420427231 is a deficient number, since it is larger than the sum of its proper divisors (96203809).

1420427231 is a wasteful number, since it uses less digits than its factorization.

1420427231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 1420427231 is about 37688.5557032901. Note that the first 3 decimals coincide. The cubic root of 1420427231 is about 1124.1035771940.

Adding to 1420427231 its reverse (1327240241), we get a palindrome (2747667472).

The spelling of 1420427231 in words is "one billion, four hundred twenty million, four hundred twenty-seven thousand, two hundred thirty-one".