99131471 has 8 divisors (see below), whose sum is σ = 105255360. Its totient is φ = 93040128.

The previous prime is 99131443. The next prime is 99131477. The reversal of 99131471 is 17413199.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99131471 - 2¹⁴ = 99115087 is a prime.

It is a super-3 number, since 3×99131471³ (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 (99131477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1706 + ... + 14183.

It is an arithmetic number, because the mean of its divisors is an integer number (13156920).

Almost surely, 2^99131471 is an apocalyptic number.

99131471 is a deficient number, since it is larger than the sum of its proper divisors (6123889).

99131471 is a wasteful number, since it uses less digits than its factorization.

99131471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16273.

The product of its digits is 6804, while the sum is 35.

The square root of 99131471 is about 9956.4788454554. The cubic root of 99131471 is about 462.8111892571.

The spelling of 99131471 in words is "ninety-nine million, one hundred thirty-one thousand, four hundred seventy-one".