831764231 has 4 divisors (see below), whose sum is σ = 832993512. Its totient is φ = 830534952.

The previous prime is 831764183. The next prime is 831764267. The reversal of 831764231 is 132467138.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-831764231 is a prime.

It is a super-2 number, since 2×831764231² = 1383663471942042722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 831764191 and 831764200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (831764281) 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, 613625 + ... + 614978.

It is an arithmetic number, because the mean of its divisors is an integer number (208248378).

Almost surely, 2^831764231 is an apocalyptic number.

831764231 is a deficient number, since it is larger than the sum of its proper divisors (1229281).

831764231 is a wasteful number, since it uses less digits than its factorization.

831764231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229280.

The product of its digits is 24192, while the sum is 35.

The square root of 831764231 is about 28840.3230044325. The cubic root of 831764231 is about 940.4450250560.

The spelling of 831764231 in words is "eight hundred thirty-one million, seven hundred sixty-four thousand, two hundred thirty-one".