98131823 has 4 divisors (see below), whose sum is σ = 102398448. Its totient is φ = 93865200.

The previous prime is 98131741. The next prime is 98131829. The reversal of 98131823 is 32813189.

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 98131823 - 2²⁴ = 81354607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98131829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133278 + ... + 2133323.

It is an arithmetic number, because the mean of its divisors is an integer number (25599612).

Almost surely, 2^98131823 is an apocalyptic number.

98131823 is a deficient number, since it is larger than the sum of its proper divisors (4266625).

98131823 is a wasteful number, since it uses less digits than its factorization.

98131823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4266624.

The product of its digits is 10368, while the sum is 35.

The square root of 98131823 is about 9906.1507660645. The cubic root of 98131823 is about 461.2502581991.

The spelling of 98131823 in words is "ninety-eight million, one hundred thirty-one thousand, eight hundred twenty-three".