840774231 has 24 divisors (see below), whose sum is σ = 1326124800. Its totient is φ = 509072400.

The previous prime is 840774229. The next prime is 840774241. The reversal of 840774231 is 132477048.

It is a happy number.

840774231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840774231 - 2¹ = 840774229 is a prime.

It is a super-2 number, since 2×840774231² = 1413802615027282722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840774241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118420 + ... + 125318.

It is an arithmetic number, because the mean of its divisors is an integer number (55255200).

Almost surely, 2^840774231 is an apocalyptic number.

840774231 is a deficient number, since it is larger than the sum of its proper divisors (485350569).

840774231 is a wasteful number, since it uses less digits than its factorization.

840774231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8147 (or 8144 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 840774231 is about 28996.1071697564. The cubic root of 840774231 is about 943.8285947381.

The spelling of 840774231 in words is "eight hundred forty million, seven hundred seventy-four thousand, two hundred thirty-one".