131890471 has 4 divisors (see below), whose sum is σ = 139648752. Its totient is φ = 124132192.

The previous prime is 131890469. The next prime is 131890511. The reversal of 131890471 is 174098131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131890471 - 2¹ = 131890469 is a prime.

It is a super-3 number, since 3×131890471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131890411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3879115 + ... + 3879148.

It is an arithmetic number, because the mean of its divisors is an integer number (34912188).

Almost surely, 2^131890471 is an apocalyptic number.

131890471 is a deficient number, since it is larger than the sum of its proper divisors (7758281).

131890471 is an equidigital number, since it uses as much as digits as its factorization.

131890471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7758280.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 131890471 is about 11484.3576659733. The cubic root of 131890471 is about 509.0234690553.

The spelling of 131890471 in words is "one hundred thirty-one million, eight hundred ninety thousand, four hundred seventy-one".