823609631 has 8 divisors (see below), whose sum is σ = 887541984. Its totient is φ = 759759840.

The previous prime is 823609621. The next prime is 823609639. The reversal of 823609631 is 136906328.

823609631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 823609631 - 2²² = 819415327 is a prime.

It is a super-2 number, since 2×823609631² = 1356665648551912322, 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 (823609639) 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, 926 + ... + 40596.

It is an arithmetic number, because the mean of its divisors is an integer number (110942748).

Almost surely, 2^823609631 is an apocalyptic number.

823609631 is a deficient number, since it is larger than the sum of its proper divisors (63932353).

823609631 is a wasteful number, since it uses less digits than its factorization.

823609631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41281.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 823609631 is about 28698.5998090499. The cubic root of 823609631 is about 937.3615581290.

The spelling of 823609631 in words is "eight hundred twenty-three million, six hundred nine thousand, six hundred thirty-one".