623511113 has 4 divisors (see below), whose sum is σ = 623561088. Its totient is φ = 623461140.

The previous prime is 623511101. The next prime is 623511151. The reversal of 623511113 is 311115326.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 623511113 - 2¹⁶ = 623445577 is a prime.

It is a super-2 number, since 2×623511113² = 777532216068997538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623511613) 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 3 ways as a sum of consecutive naturals, for example, 11120 + ... + 37022.

It is an arithmetic number, because the mean of its divisors is an integer number (155890272).

Almost surely, 2^623511113 is an apocalyptic number.

It is an amenable number.

623511113 is a deficient number, since it is larger than the sum of its proper divisors (49975).

623511113 is a wasteful number, since it uses less digits than its factorization.

623511113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49974.

The product of its digits is 540, while the sum is 23.

The square root of 623511113 is about 24970.2045045690. The cubic root of 623511113 is about 854.3085105874.

Adding to 623511113 its reverse (311115326), we get a palindrome (934626439).

The spelling of 623511113 in words is "six hundred twenty-three million, five hundred eleven thousand, one hundred thirteen".