1312423522 has 16 divisors (see below), whose sum is σ = 2025767232. Its totient is φ = 637236720.

The previous prime is 1312423517. The next prime is 1312423523. The reversal of 1312423522 is 2253242131.

It is not an unprimeable number, because it can be changed into a prime (1312423523) 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, 21747 + ... + 55657.

It is an arithmetic number, because the mean of its divisors is an integer number (126610452).

Almost surely, 2^1312423522 is an apocalyptic number.

1312423522 is a deficient number, since it is larger than the sum of its proper divisors (713343710).

1312423522 is a wasteful number, since it uses less digits than its factorization.

1312423522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34473.

The product of its digits is 2880, while the sum is 25.

The square root of 1312423522 is about 36227.3863534205. The cubic root of 1312423522 is about 1094.8585187262.

Adding to 1312423522 its reverse (2253242131), we get a palindrome (3565665653).

The spelling of 1312423522 in words is "one billion, three hundred twelve million, four hundred twenty-three thousand, five hundred twenty-two".