812880111 has 8 divisors (see below), whose sum is σ = 1102210560. Its totient is φ = 532734872.

The previous prime is 812880073. The next prime is 812880119. The reversal of 812880111 is 111088218.

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

It is a cyclic number.

It is not a de Polignac number, because 812880111 - 2¹³ = 812871919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812880119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296095 + ... + 2296448.

It is an arithmetic number, because the mean of its divisors is an integer number (137776320).

Almost surely, 2^812880111 is an apocalyptic number.

812880111 is a deficient number, since it is larger than the sum of its proper divisors (289330449).

812880111 is a wasteful number, since it uses less digits than its factorization.

812880111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4592605.

The product of its (nonzero) digits is 1024, while the sum is 30.

The square root of 812880111 is about 28511.0524358537. The cubic root of 812880111 is about 933.2732812411.

The spelling of 812880111 in words is "eight hundred twelve million, eight hundred eighty thousand, one hundred eleven".