851653231 has 8 divisors (see below), whose sum is σ = 1000543824. Its totient is φ = 714673920.

The previous prime is 851653219. The next prime is 851653241. The reversal of 851653231 is 132356158.

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 851653231 - 2¹¹ = 851651183 is a prime.

It is a super-2 number, since 2×851653231² = 1450626451745478722, 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 (851653211) 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, 2977666 + ... + 2977951.

It is an arithmetic number, because the mean of its divisors is an integer number (125067978).

Almost surely, 2^851653231 is an apocalyptic number.

851653231 is a deficient number, since it is larger than the sum of its proper divisors (148890593).

851653231 is a wasteful number, since it uses less digits than its factorization.

851653231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5955641.

The product of its digits is 21600, while the sum is 34.

The square root of 851653231 is about 29183.0983790275. The cubic root of 851653231 is about 947.8819779694.

The spelling of 851653231 in words is "eight hundred fifty-one million, six hundred fifty-three thousand, two hundred thirty-one".