1423131278 has 8 divisors (see below), whose sum is σ = 2144814600. Its totient is φ = 708193080.

The previous prime is 1423131257. The next prime is 1423131289. The reversal of 1423131278 is 8721313241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685753 + ... + 1686596.

It is an arithmetic number, because the mean of its divisors is an integer number (268101825).

Almost surely, 2^1423131278 is an apocalyptic number.

1423131278 is a deficient number, since it is larger than the sum of its proper divisors (721683322).

1423131278 is a wasteful number, since it uses less digits than its factorization.

1423131278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3372562.

The product of its digits is 8064, while the sum is 32.

The square root of 1423131278 is about 37724.4122286882. The cubic root of 1423131278 is about 1124.8164383305.

The spelling of 1423131278 in words is "one billion, four hundred twenty-three million, one hundred thirty-one thousand, two hundred seventy-eight".