202131998 has 16 divisors (see below), whose sum is σ = 306620160. Its totient is φ = 99929376.

The previous prime is 202131977. The next prime is 202132003. The reversal of 202131998 is 899131202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185411 + ... + 186497.

It is an arithmetic number, because the mean of its divisors is an integer number (19163760).

Almost surely, 2^202131998 is an apocalyptic number.

202131998 is a deficient number, since it is larger than the sum of its proper divisors (104488162).

202131998 is a wasteful number, since it uses less digits than its factorization.

202131998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 202131998 is about 14217.3133186267. The cubic root of 202131998 is about 586.8742072330.

The spelling of 202131998 in words is "two hundred two million, one hundred thirty-one thousand, nine hundred ninety-eight".