811123630 has 8 divisors (see below), whose sum is σ = 1460022552. Its totient is φ = 324449448.

The previous prime is 811123619. The next prime is 811123631. The reversal of 811123630 is 36321118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 811123595 and 811123604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811123631) 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, 40556172 + ... + 40556191.

It is an arithmetic number, because the mean of its divisors is an integer number (182502819).

Almost surely, 2^811123630 is an apocalyptic number.

811123630 is a deficient number, since it is larger than the sum of its proper divisors (648898922).

811123630 is a wasteful number, since it uses less digits than its factorization.

811123630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81112370.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 811123630 is about 28480.2322673113. The cubic root of 811123630 is about 932.6005871556.

Adding to 811123630 its reverse (36321118), we get a palindrome (847444748).

The spelling of 811123630 in words is "eight hundred eleven million, one hundred twenty-three thousand, six hundred thirty".