131002201 has 4 divisors (see below), whose sum is σ = 142911504. Its totient is φ = 119092900.

The previous prime is 131002177. The next prime is 131002211. The reversal of 131002201 is 102200131.

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: 102200131 = 11 ⋅9290921.

It is a cyclic number.

It is not a de Polignac number, because 131002201 - 2⁷ = 131002073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131002211) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 5954635 + ... + 5954656.

It is an arithmetic number, because the mean of its divisors is an integer number (35727876).

Almost surely, 2^131002201 is an apocalyptic number.

131002201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131002201 is a deficient number, since it is larger than the sum of its proper divisors (11909303).

131002201 is a wasteful number, since it uses less digits than its factorization.

131002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11909302.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 131002201 is about 11445.6192929872. The cubic root of 131002201 is about 507.8781521575.

Adding to 131002201 its reverse (102200131), we get a palindrome (233202332).

The spelling of 131002201 in words is "one hundred thirty-one million, two thousand, two hundred one".