103731201821 has 16 divisors (see below), whose sum is σ = 112920931200. Its totient is φ = 94719371328.

The previous prime is 103731201787. The next prime is 103731201829. The reversal of 103731201821 is 128102137301.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103731201821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103731201829) 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, 396920 + ... + 604158.

It is an arithmetic number, because the mean of its divisors is an integer number (7057558200).

Almost surely, 2^103731201821 is an apocalyptic number.

It is an amenable number.

103731201821 is a deficient number, since it is larger than the sum of its proper divisors (9189729379).

103731201821 is a wasteful number, since it uses less digits than its factorization.

103731201821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207668.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 103731201821 in words is "one hundred three billion, seven hundred thirty-one million, two hundred one thousand, eight hundred twenty-one".