131102201 has 4 divisors (see below), whose sum is σ = 131529552. Its totient is φ = 130674852.

The previous prime is 131102177. The next prime is 131102221. The reversal of 131102201 is 102201131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102201131 = 311 ⋅328621.

It is a cyclic number.

It is not a de Polignac number, because 131102201 - 2¹⁰ = 131101177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131102221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213215 + ... + 213828.

It is an arithmetic number, because the mean of its divisors is an integer number (32882388).

Almost surely, 2^131102201 is an apocalyptic number.

It is an amenable number.

131102201 is a deficient number, since it is larger than the sum of its proper divisors (427351).

131102201 is an equidigital number, since it uses as much as digits as its factorization.

131102201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427350.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131102201 is about 11449.9869432240. The cubic root of 131102201 is about 508.0073482001.

Adding to 131102201 its reverse (102201131), we get a palindrome (233303332).

It can be divided in two parts, 131 and 102201, that multiplied together give a palindrome (13388331).

The spelling of 131102201 in words is "one hundred thirty-one million, one hundred two thousand, two hundred one".