2311513 has 2 divisors, whose sum is σ = 2311514. Its totient is φ = 2311512.

The previous prime is 2311499. The next prime is 2311531. The reversal of 2311513 is 3151132.

Together with next prime (2311531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1774224 + 537289 = 1332^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 2311513 - 2¹³ = 2303321 is a prime.

2311513 is a lucky number.

It is a plaindrome in base 16.

It is not a weakly prime, because it can be changed into another prime (2311553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155756 + 1155757.

It is an arithmetic number, because the mean of its divisors is an integer number (1155757).

2^2311513 is an apocalyptic number.

It is an amenable number.

2311513 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311513 is an equidigital number, since it uses as much as digits as its factorization.

2311513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90, while the sum is 16.

The square root of 2311513 is about 1520.3660743387. The cubic root of 2311513 is about 132.2204954175.

Adding to 2311513 its reverse (3151132), we get a palindrome (5462645).

The spelling of 2311513 in words is "two million, three hundred eleven thousand, five hundred thirteen".