23130306 has 16 divisors (see below), whose sum is σ = 51400800. Its totient is φ = 7710084.

The previous prime is 23130287. The next prime is 23130323. The reversal of 23130306 is 60303132.

It is a happy number.

It is a super-2 number, since 2×23130306² = 1070022111307272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214116 + ... + 214223.

It is an arithmetic number, because the mean of its divisors is an integer number (3212550).

Almost surely, 2^23130306 is an apocalyptic number.

23130306 is an abundant number, since it is smaller than the sum of its proper divisors (28270494).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23130306 is a wasteful number, since it uses less digits than its factorization.

23130306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428350 (or 428344 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 23130306 is about 4809.3976753851. The cubic root of 23130306 is about 284.9227491457.

Adding to 23130306 its reverse (60303132), we get a palindrome (83433438).

It can be divided in two parts, 23130 and 306, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 23130306 in words is "twenty-three million, one hundred thirty thousand, three hundred six".