101998523 has 16 divisors (see below), whose sum is σ = 113050080. Its totient is φ = 92018080.

The previous prime is 101998513. The next prime is 101998541. The reversal of 101998523 is 325899101.

It is not a de Polignac number, because 101998523 - 2¹⁰ = 101997499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101998513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262013 + ... + 262401.

It is an arithmetic number, because the mean of its divisors is an integer number (7065630).

Almost surely, 2^101998523 is an apocalyptic number.

101998523 is a deficient number, since it is larger than the sum of its proper divisors (11051557).

101998523 is an equidigital number, since it uses as much as digits as its factorization.

101998523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 597 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 101998523 is about 10099.4318157013. The cubic root of 101998523 is about 467.2306175862.

The spelling of 101998523 in words is "one hundred one million, nine hundred ninety-eight thousand, five hundred twenty-three".