201831202102 has 16 divisors (see below), whose sum is σ = 305725623840. Its totient is φ = 99922914432.

The previous prime is 201831202081. The next prime is 201831202231. The reversal of 201831202102 is 201202138102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1645024 + ... + 1763452.

It is an arithmetic number, because the mean of its divisors is an integer number (19107851490).

Almost surely, 2^201831202102 is an apocalyptic number.

201831202102 is a deficient number, since it is larger than the sum of its proper divisors (103894421738).

201831202102 is a wasteful number, since it uses less digits than its factorization.

201831202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126807.

The product of its (nonzero) digits is 384, while the sum is 22.

The spelling of 201831202102 in words is "two hundred one billion, eight hundred thirty-one million, two hundred two thousand, one hundred two".