131220301 has 4 divisors (see below), whose sum is σ = 131798592. Its totient is φ = 130642012.

The previous prime is 131220293. The next prime is 131220329. The reversal of 131220301 is 103022131.

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.

It is a cyclic number.

It is not a de Polignac number, because 131220301 - 2³ = 131220293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131220361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288805 + ... + 289258.

It is an arithmetic number, because the mean of its divisors is an integer number (32949648).

Almost surely, 2^131220301 is an apocalyptic number.

It is an amenable number.

131220301 is a deficient number, since it is larger than the sum of its proper divisors (578291).

131220301 is an equidigital number, since it uses as much as digits as its factorization.

131220301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578290.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 131220301 is about 11455.1429934331. The cubic root of 131220301 is about 508.1598441439.

Adding to 131220301 its reverse (103022131), we get a palindrome (234242432).

The spelling of 131220301 in words is "one hundred thirty-one million, two hundred twenty thousand, three hundred one".