30113623 has 4 divisors (see below), whose sum is σ = 30145608. Its totient is φ = 30081640.

The previous prime is 30113609. The next prime is 30113627. The reversal of 30113623 is 32631103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32631103 = 71 ⋅459593.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30113623 is a prime.

It is a super-2 number, since 2×30113623² = 1813660580372258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30113623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30113627) 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, 14536 + ... + 16477.

It is an arithmetic number, because the mean of its divisors is an integer number (7536402).

Almost surely, 2^30113623 is an apocalyptic number.

30113623 is a deficient number, since it is larger than the sum of its proper divisors (31985).

30113623 is an equidigital number, since it uses as much as digits as its factorization.

30113623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31984.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 30113623 is about 5487.5880858534. The cubic root of 30113623 is about 311.1150375874.

Adding to 30113623 its reverse (32631103), we get a palindrome (62744726).

It can be divided in two parts, 301 and 13623, that added together give a square (13924 = 118²).

The spelling of 30113623 in words is "thirty million, one hundred thirteen thousand, six hundred twenty-three".