85131351 has 16 divisors (see below), whose sum is σ = 126265600. Its totient is φ = 56688984.

The previous prime is 85131341. The next prime is 85131367. The reversal of 85131351 is 15313158.

It is not a de Polignac number, because 85131351 - 2¹⁸ = 84869207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85131311) 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, 37980 + ... + 40158.

It is an arithmetic number, because the mean of its divisors is an integer number (7891600).

Almost surely, 2^85131351 is an apocalyptic number.

85131351 is a deficient number, since it is larger than the sum of its proper divisors (41134249).

85131351 is a wasteful number, since it uses less digits than its factorization.

85131351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3635 (or 3629 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 85131351 is about 9226.6652155587. The cubic root of 85131351 is about 439.9093322133.

The spelling of 85131351 in words is "eighty-five million, one hundred thirty-one thousand, three hundred fifty-one".