131108350221 has 32 divisors (see below), whose sum is σ = 198460782720. Its totient is φ = 85513139712.

The previous prime is 131108350213. The next prime is 131108350271. The reversal of 131108350221 is 122053801131.

131108350221 is a `hidden beast` number, since 1 + 31 + 108 + 3 + 502 + 21 = 666.

It is not a de Polignac number, because 131108350221 - 2³ = 131108350213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131108350201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 375370 + ... + 634916.

It is an arithmetic number, because the mean of its divisors is an integer number (6201899460).

Almost surely, 2^131108350221 is an apocalyptic number.

It is an amenable number.

131108350221 is a deficient number, since it is larger than the sum of its proper divisors (67352432499).

131108350221 is a wasteful number, since it uses less digits than its factorization.

131108350221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259962 (or 259956 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 131108350221 in words is "one hundred thirty-one billion, one hundred eight million, three hundred fifty thousand, two hundred twenty-one".