851340531 has 16 divisors (see below), whose sum is σ = 1171817856. Its totient is φ = 549446016.

The previous prime is 851340509. The next prime is 851340547. The reversal of 851340531 is 135043158.

It is not a de Polignac number, because 851340531 - 2⁷ = 851340403 is a prime.

It is a super-2 number, since 2×851340531² = 1449561399446723922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (851340551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14625 + ... + 43778.

It is an arithmetic number, because the mean of its divisors is an integer number (73238616).

Almost surely, 2^851340531 is an apocalyptic number.

851340531 is a deficient number, since it is larger than the sum of its proper divisors (320477325).

851340531 is a wasteful number, since it uses less digits than its factorization.

851340531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58562.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 851340531 is about 29177.7403340286. The cubic root of 851340531 is about 947.7659530555.

Adding to 851340531 its reverse (135043158), we get a palindrome (986383689).

The spelling of 851340531 in words is "eight hundred fifty-one million, three hundred forty thousand, five hundred thirty-one".