131851071 has 48 divisors (see below), whose sum is σ = 217945728. Its totient is φ = 78991200.

The previous prime is 131851063. The next prime is 131851117. The reversal of 131851071 is 170158131.

It is not a de Polignac number, because 131851071 - 2³ = 131851063 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131851001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285781 + ... + 286241.

It is an arithmetic number, because the mean of its divisors is an integer number (4540536).

Almost surely, 2^131851071 is an apocalyptic number.

131851071 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131851071 is a deficient number, since it is larger than the sum of its proper divisors (86094657).

131851071 is a wasteful number, since it uses less digits than its factorization.

131851071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

The square root of 131851071 is about 11482.6421611056. The cubic root of 131851071 is about 508.9727766842.

The spelling of 131851071 in words is "one hundred thirty-one million, eight hundred fifty-one thousand, seventy-one".