1423312143 has 16 divisors (see below), whose sum is σ = 2081718912. Its totient is φ = 857844000.

The previous prime is 1423312127. The next prime is 1423312183. The reversal of 1423312143 is 3412133241.

It is a happy number.

It is not a de Polignac number, because 1423312143 - 2⁴ = 1423312127 is a prime.

It is a super-2 number, since 2×1423312143² = 4051634912822504898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423312123) 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, 113173 + ... + 125118.

It is an arithmetic number, because the mean of its divisors is an integer number (130107432).

Almost surely, 2^1423312143 is an apocalyptic number.

1423312143 is a deficient number, since it is larger than the sum of its proper divisors (658406769).

1423312143 is a wasteful number, since it uses less digits than its factorization.

1423312143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238486.

The product of its digits is 1728, while the sum is 24.

The square root of 1423312143 is about 37726.8093403087. The cubic root of 1423312143 is about 1124.8640870870.

Adding to 1423312143 its reverse (3412133241), we get a palindrome (4835445384).

The spelling of 1423312143 in words is "one billion, four hundred twenty-three million, three hundred twelve thousand, one hundred forty-three".