851416231 has 16 divisors (see below), whose sum is σ = 900956160. Its totient is φ = 802992960.

The previous prime is 851416207. The next prime is 851416243. The reversal of 851416231 is 132614158.

It is a cyclic number.

It is not a de Polignac number, because 851416231 - 2⁵ = 851416199 is a prime.

It is a super-2 number, since 2×851416231² = 1449819196820490722, 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 = 851416193 and 851416202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851416261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 665050 + ... + 666328.

It is an arithmetic number, because the mean of its divisors is an integer number (56309760).

Almost surely, 2^851416231 is an apocalyptic number.

851416231 is a deficient number, since it is larger than the sum of its proper divisors (49539929).

851416231 is a wasteful number, since it uses less digits than its factorization.

851416231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686.

The product of its digits is 5760, while the sum is 31.

The square root of 851416231 is about 29179.0375269645. The cubic root of 851416231 is about 947.7940435604.

The spelling of 851416231 in words is "eight hundred fifty-one million, four hundred sixteen thousand, two hundred thirty-one".