2391361 has 4 divisors (see below), whose sum is σ = 2732992. Its totient is φ = 2049732.

The previous prime is 2391349. The next prime is 2391401. The reversal of 2391361 is 1631932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2391361 - 2⁹ = 2390849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2391331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170805 + ... + 170818.

It is an arithmetic number, because the mean of its divisors is an integer number (683248).

2^2391361 is an apocalyptic number.

It is an amenable number.

2391361 is a deficient number, since it is larger than the sum of its proper divisors (341631).

2391361 is an equidigital number, since it uses as much as digits as its factorization.

2391361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341630.

The product of its digits is 972, while the sum is 25.

The square root of 2391361 is about 1546.4025995840. The cubic root of 2391361 is about 133.7257515653.

It can be divided in two parts, 239 and 1361, that added together give a square (1600 = 40²).

The spelling of 2391361 in words is "two million, three hundred ninety-one thousand, three hundred sixty-one".