811034143 has 12 divisors (see below), whose sum is σ = 831758760. Its totient is φ = 790795616.

The previous prime is 811034131. The next prime is 811034153. The reversal of 811034143 is 341430118.

It is not a de Polignac number, because 811034143 - 2⁵ = 811034111 is a prime.

It is a super-2 number, since 2×811034143² = 1315552762223488898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811034123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 502005 + ... + 503617.

It is an arithmetic number, because the mean of its divisors is an integer number (69313230).

Almost surely, 2^811034143 is an apocalyptic number.

811034143 is a deficient number, since it is larger than the sum of its proper divisors (20724617).

811034143 is a wasteful number, since it uses less digits than its factorization.

811034143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1845 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 811034143 is about 28478.6611869308. The cubic root of 811034143 is about 932.5662895899.

The spelling of 811034143 in words is "eight hundred eleven million, thirty-four thousand, one hundred forty-three".