1312498723 has 4 divisors (see below), whose sum is σ = 1312880760. Its totient is φ = 1312116688.

The previous prime is 1312498721. The next prime is 1312498727. The reversal of 1312498723 is 3278942131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3278942131 = 113 ⋅29017187.

It is a cyclic number.

It is not a de Polignac number, because 1312498723 - 2¹ = 1312498721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312498721) 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, 185818 + ... + 192751.

It is an arithmetic number, because the mean of its divisors is an integer number (328220190).

Almost surely, 2^1312498723 is an apocalyptic number.

1312498723 is a deficient number, since it is larger than the sum of its proper divisors (382037).

1312498723 is an equidigital number, since it uses as much as digits as its factorization.

1312498723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382036.

The product of its digits is 72576, while the sum is 40.

The square root of 1312498723 is about 36228.4242411949. The cubic root of 1312498723 is about 1094.8794298832.

The spelling of 1312498723 in words is "one billion, three hundred twelve million, four hundred ninety-eight thousand, seven hundred twenty-three".