1312763 has 4 divisors (see below), whose sum is σ = 1315440. Its totient is φ = 1310088.

The previous prime is 1312739. The next prime is 1312769. The reversal of 1312763 is 3672131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3672131 = 379 ⋅9689.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312769) 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, 368 + ... + 1661.

It is an arithmetic number, because the mean of its divisors is an integer number (328860).

2^1312763 is an apocalyptic number.

1312763 is a deficient number, since it is larger than the sum of its proper divisors (2677).

1312763 is an equidigital number, since it uses as much as digits as its factorization.

1312763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676.

The product of its digits is 756, while the sum is 23.

The square root of 1312763 is about 1145.7587005997. The cubic root of 1312763 is about 109.4952911106.

Adding to 1312763 its reverse (3672131), we get a palindrome (4984894).

It can be divided in two parts, 131276 and 3, that multiplied together give a triangular number (393828 = T₈₈₇).

The spelling of 1312763 in words is "one million, three hundred twelve thousand, seven hundred sixty-three".