1312423512 has 32 divisors (see below), whose sum is σ = 3284938800. Its totient is φ = 436957184.

The previous prime is 1312423481. The next prime is 1312423513. The reversal of 1312423512 is 2153242131.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312423513) 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, 11337 + ... + 52472.

Almost surely, 2^1312423512 is an apocalyptic number.

1312423512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312423512 is an abundant number, since it is smaller than the sum of its proper divisors (1972515288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1312423512 is a wasteful number, since it uses less digits than its factorization.

1312423512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64675 (or 64671 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 1312423512 is about 36227.3862154034. The cubic root of 1312423512 is about 1094.8585159455.

Adding to 1312423512 its reverse (2153242131), we get a palindrome (3465665643).

The spelling of 1312423512 in words is "one billion, three hundred twelve million, four hundred twenty-three thousand, five hundred twelve".