1872313 has 2 divisors, whose sum is σ = 1872314. Its totient is φ = 1872312.

The previous prime is 1872301. The next prime is 1872319. The reversal of 1872313 is 3132781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1447209 + 425104 = 1203^2 + 652^2 .

It is an emirp because it is prime and its reverse (3132781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1872313 - 2⁵ = 1872281 is a prime.

1872313 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1872319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 936156 + 936157.

It is an arithmetic number, because the mean of its divisors is an integer number (936157).

2^1872313 is an apocalyptic number.

It is an amenable number.

1872313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1872313 is an equidigital number, since it uses as much as digits as its factorization.

1872313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 25.

The square root of 1872313 is about 1368.3248883215. The cubic root of 1872313 is about 123.2516714510.

It can be divided in two parts, 187 and 2313, that added together give a square (2500 = 50²).

The spelling of 1872313 in words is "one million, eight hundred seventy-two thousand, three hundred thirteen".