201123698 has 4 divisors (see below), whose sum is σ = 301685550. Its totient is φ = 100561848.

The previous prime is 201123679. The next prime is 201123701. The reversal of 201123698 is 896321102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 896321102 = 2 ⋅448160551.

It can be written as a sum of positive squares in only one way, i.e., 190081369 + 11042329 = 13787^2 + 3323^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 50280923 + ... + 50280926.

Almost surely, 2^201123698 is an apocalyptic number.

201123698 is a deficient number, since it is larger than the sum of its proper divisors (100561852).

201123698 is a wasteful number, since it uses less digits than its factorization.

201123698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100561851.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 201123698 is about 14181.8086998803. The cubic root of 201123698 is about 585.8967404555.

The spelling of 201123698 in words is "two hundred one million, one hundred twenty-three thousand, six hundred ninety-eight".