1313623 has 2 divisors, whose sum is σ = 1313624. Its totient is φ = 1313622.

The previous prime is 1313621. The next prime is 1313629. The reversal of 1313623 is 3263131.

It is a weak prime.

It is an emirp because it is prime and its reverse (3263131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1313623 - 2¹ = 1313621 is a prime.

It is a super-2 number, since 2×1313623² = 3451210772258, which contains 22 as substring.

Together with 1313621, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1313623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656811 + 656812.

It is an arithmetic number, because the mean of its divisors is an integer number (656812).

2^1313623 is an apocalyptic number.

1313623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313623 is an equidigital number, since it uses as much as digits as its factorization.

1313623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 19.

The square root of 1313623 is about 1146.1339363268. The cubic root of 1313623 is about 109.5191962620.

Adding to 1313623 its reverse (3263131), we get a palindrome (4576754).

It can be divided in two parts, 1313 and 623, that added together give a square (1936 = 44²).

The spelling of 1313623 in words is "one million, three hundred thirteen thousand, six hundred twenty-three".