1623313 has 12 divisors (see below), whose sum is σ = 1779372. Its totient is φ = 1479680.

The previous prime is 1623299. The next prime is 1623319. The reversal of 1623313 is 3133261.

It can be written as a sum of positive squares in 6 ways, for example, as 5329 + 1617984 = 73^2 + 1272^2 .

It is not a de Polignac number, because 1623313 - 2¹³ = 1615121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1623319) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11781 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (148281).

2^1623313 is an apocalyptic number.

It is an amenable number.

1623313 is a deficient number, since it is larger than the sum of its proper divisors (156059).

1623313 is a wasteful number, since it uses less digits than its factorization.

1623313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 195 counting only the distinct ones).

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

The square root of 1623313 is about 1274.0930107335. The cubic root of 1623313 is about 117.5260361800.

Adding to 1623313 its reverse (3133261), we get a palindrome (4756574).

It can be divided in two parts, 1623 and 313, that added together give a square (1936 = 44²).

The spelling of 1623313 in words is "one million, six hundred twenty-three thousand, three hundred thirteen".