1642313 has 2 divisors, whose sum is σ = 1642314. Its totient is φ = 1642312.

The previous prime is 1642309. The next prime is 1642327. The reversal of 1642313 is 3132461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236544 + 405769 = 1112^2 + 637^2 .

It is an emirp because it is prime and its reverse (3132461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1642313 - 2² = 1642309 is a prime.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (1642363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821156 + 821157.

It is an arithmetic number, because the mean of its divisors is an integer number (821157).

2^1642313 is an apocalyptic number.

It is an amenable number.

1642313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642313 is an equidigital number, since it uses as much as digits as its factorization.

1642313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 1642313 is about 1281.5276040726. The cubic root of 1642313 is about 117.9827850018.

Adding to 1642313 its reverse (3132461), we get a palindrome (4774774).

The spelling of 1642313 in words is "one million, six hundred forty-two thousand, three hundred thirteen".