1312423104340 has 24 divisors (see below), whose sum is σ = 2767620280320. Its totient is φ = 522772715808.

The previous prime is 1312423104329. The next prime is 1312423104347. The reversal of 1312423104340 is 434013242131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1312423104299 and 1312423104308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312423104347) 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, 137277972 + ... + 137287531.

It is an arithmetic number, because the mean of its divisors is an integer number (115317511680).

Almost surely, 2^{1312423104340} is an apocalyptic number.

1312423104340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1312423104340 is an abundant number, since it is smaller than the sum of its proper divisors (1455197175980).

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

1312423104340 is a wasteful number, since it uses less digits than its factorization.

1312423104340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274565751 (or 274565749 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 1312423104340 its reverse (434013242131), we get a palindrome (1746436346471).

The spelling of 1312423104340 in words is "one trillion, three hundred twelve billion, four hundred twenty-three million, one hundred four thousand, three hundred forty".