1312244123 has 4 divisors (see below), whose sum is σ = 1312451640. Its totient is φ = 1312036608.

The previous prime is 1312244107. The next prime is 1312244149. The reversal of 1312244123 is 3214422131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3214422131 = 691 ⋅4651841.

It is a cyclic number.

It is not a de Polignac number, because 1312244123 - 2⁴ = 1312244107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312240123) 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, 93965 + ... + 107022.

It is an arithmetic number, because the mean of its divisors is an integer number (328112910).

Almost surely, 2^1312244123 is an apocalyptic number.

1312244123 is a deficient number, since it is larger than the sum of its proper divisors (207517).

1312244123 is an equidigital number, since it uses as much as digits as its factorization.

1312244123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207516.

The product of its digits is 1152, while the sum is 23.

The square root of 1312244123 is about 36224.9102552373. The cubic root of 1312244123 is about 1094.8086299847.

Adding to 1312244123 its reverse (3214422131), we get a palindrome (4526666254).

The spelling of 1312244123 in words is "one billion, three hundred twelve million, two hundred forty-four thousand, one hundred twenty-three".