1312143254 has 8 divisors (see below), whose sum is σ = 2016220248. Its totient is φ = 640069840.

The previous prime is 1312143253. The next prime is 1312143257. The reversal of 1312143254 is 4523412131.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312143253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8000792 + ... + 8000955.

It is an arithmetic number, because the mean of its divisors is an integer number (252027531).

Almost surely, 2^1312143254 is an apocalyptic number.

1312143254 is a deficient number, since it is larger than the sum of its proper divisors (704076994).

1312143254 is a wasteful number, since it uses less digits than its factorization.

1312143254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16001790.

The product of its digits is 2880, while the sum is 26.

The square root of 1312143254 is about 36223.5179683034. The cubic root of 1312143254 is about 1094.7805775110.

Adding to 1312143254 its reverse (4523412131), we get a palindrome (5835555385).

The spelling of 1312143254 in words is "one billion, three hundred twelve million, one hundred forty-three thousand, two hundred fifty-four".