1281424323 has 8 divisors (see below), whose sum is σ = 1782851328. Its totient is φ = 817140104.

The previous prime is 1281424303. The next prime is 1281424387. The reversal of 1281424323 is 3234241821.

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 1281424323 - 2¹² = 1281420227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1281424303) 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, 9285615 + ... + 9285752.

It is an arithmetic number, because the mean of its divisors is an integer number (222856416).

Almost surely, 2^1281424323 is an apocalyptic number.

1281424323 is a deficient number, since it is larger than the sum of its proper divisors (501427005).

1281424323 is a wasteful number, since it uses less digits than its factorization.

1281424323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18571393.

The product of its digits is 9216, while the sum is 30.

The square root of 1281424323 is about 35796.9876246591. The cubic root of 1281424323 is about 1086.1696272926.

The spelling of 1281424323 in words is "one billion, two hundred eighty-one million, four hundred twenty-four thousand, three hundred twenty-three".