2391237 has 12 divisors (see below), whose sum is σ = 3657420. Its totient is φ = 1500288.

The previous prime is 2391227. The next prime is 2391239. The reversal of 2391237 is 7321932.

2391237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2232036 + 159201 = 1494^2 + 399^2 .

It is not a de Polignac number, because 2391237 - 2²⁰ = 1342661 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2391237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2391239) 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 in 11 ways as a sum of consecutive naturals, for example, 7662 + ... + 7967.

It is an arithmetic number, because the mean of its divisors is an integer number (304785).

2^2391237 is an apocalyptic number.

It is an amenable number.

2391237 is a deficient number, since it is larger than the sum of its proper divisors (1266183).

2391237 is a wasteful number, since it uses less digits than its factorization.

2391237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15652 (or 15649 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2391237 is about 1546.3625060121. The cubic root of 2391237 is about 133.7234401508.

It can be divided in two parts, 2391 and 237, that added together give a triangular number (2628 = T₇₂).

The spelling of 2391237 in words is "two million, three hundred ninety-one thousand, two hundred thirty-seven".