131321201 has 4 divisors (see below), whose sum is σ = 143259504. Its totient is φ = 119382900.

The previous prime is 131321173. The next prime is 131321221. The reversal of 131321201 is 102123131.

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 a de Polignac number, because none of the positive numbers 2^k-131321201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131321221) 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, 5969135 + ... + 5969156.

It is an arithmetic number, because the mean of its divisors is an integer number (35814876).

Almost surely, 2^131321201 is an apocalyptic number.

131321201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

131321201 is a deficient number, since it is larger than the sum of its proper divisors (11938303).

131321201 is a wasteful number, since it uses less digits than its factorization.

131321201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11938302.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 131321201 is about 11459.5462824669. The cubic root of 131321201 is about 508.2900582229.

Adding to 131321201 its reverse (102123131), we get a palindrome (233444332).

The spelling of 131321201 in words is "one hundred thirty-one million, three hundred twenty-one thousand, two hundred one".