85150431 has 18 divisors (see below), whose sum is σ = 126427392. Its totient is φ = 55224720.

The previous prime is 85150423. The next prime is 85150469. The reversal of 85150431 is 13405158.

85150431 is a `hidden beast` number, since 85 + 150 + 431 = 666.

It is not a de Polignac number, because 85150431 - 2³ = 85150423 is a prime.

It is a super-2 number, since 2×85150431² = 14501191798971522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85150395 and 85150404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85150421) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 8866 + ... + 15776.

It is an arithmetic number, because the mean of its divisors is an integer number (7023744).

Almost surely, 2^85150431 is an apocalyptic number.

85150431 is a deficient number, since it is larger than the sum of its proper divisors (41276961).

85150431 is a wasteful number, since it uses less digits than its factorization.

85150431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6991 (or 6951 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 85150431 is about 9227.6991173315. The cubic root of 85150431 is about 439.9421945411.

Adding to 85150431 its reverse (13405158), we get a palindrome (98555589).

The spelling of 85150431 in words is "eighty-five million, one hundred fifty thousand, four hundred thirty-one".