831840465 has 16 divisors (see below), whose sum is σ = 1331804736. Its totient is φ = 443361600.

The previous prime is 831840433. The next prime is 831840487. The reversal of 831840465 is 564048138.

It is not a de Polignac number, because 831840465 - 2⁵ = 831840433 is a prime.

It is a super-2 number, since 2×831840465² = 1383917118422832450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7210 + ... + 41420.

It is an arithmetic number, because the mean of its divisors is an integer number (83237796).

Almost surely, 2^831840465 is an apocalyptic number.

It is an amenable number.

831840465 is a deficient number, since it is larger than the sum of its proper divisors (499964271).

831840465 is a wasteful number, since it uses less digits than its factorization.

831840465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35840.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 831840465 is about 28841.6446306378. The cubic root of 831840465 is about 940.4737558322.

The spelling of 831840465 in words is "eight hundred thirty-one million, eight hundred forty thousand, four hundred sixty-five".