2351623 has 4 divisors (see below), whose sum is σ = 2357488. Its totient is φ = 2345760.

The previous prime is 2351617. The next prime is 2351641. The reversal of 2351623 is 3261532.

2351623 is nontrivially palindromic in base 9.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2351623 - 2¹⁷ = 2220551 is a prime.

It is the 1534-th Hogben number.

It is a Duffinian number.

2351623 is a lucky number.

It is a plaindrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 2351594 and 2351603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2351603) by changing a digit.

It is a nontrivial repunit in base 1533.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2283 + ... + 3148.

It is an arithmetic number, because the mean of its divisors is an integer number (589372).

2^2351623 is an apocalyptic number.

2351623 is a deficient number, since it is larger than the sum of its proper divisors (5865).

2351623 is an equidigital number, since it uses as much as digits as its factorization.

2351623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5864.

The product of its digits is 1080, while the sum is 22.

The square root of 2351623 is about 1533.5002445386. The cubic root of 2351623 is about 132.9808893340.

Subtracting 2351623 from its reverse (3261532), we obtain a palindrome (909909).

The spelling of 2351623 in words is "two million, three hundred fifty-one thousand, six hundred twenty-three".