99012131 has 8 divisors (see below), whose sum is σ = 106402320. Its totient is φ = 91795968.

The previous prime is 99012083. The next prime is 99012143. The reversal of 99012131 is 13121099.

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 99012131 - 2¹⁴ = 98995747 is a prime.

It is a super-2 number, since 2×99012131² = 19606804170322322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99012131.

It is not an unprimeable number, because it can be changed into a prime (99012181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42326 + ... + 44603.

It is an arithmetic number, because the mean of its divisors is an integer number (13300290).

Almost surely, 2^99012131 is an apocalyptic number.

99012131 is a deficient number, since it is larger than the sum of its proper divisors (7390189).

99012131 is a wasteful number, since it uses less digits than its factorization.

99012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87013.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 99012131 is about 9950.4839580796. The cubic root of 99012131 is about 462.6253953636.

The spelling of 99012131 in words is "ninety-nine million, twelve thousand, one hundred thirty-one".