131231201 has 8 divisors (see below), whose sum is σ = 134586144. Its totient is φ = 127883680.

The previous prime is 131231183. The next prime is 131231207. The reversal of 131231201 is 102132131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 131231201 - 2¹⁸ = 130969057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131231207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57386 + ... + 59628.

It is an arithmetic number, because the mean of its divisors is an integer number (16823268).

Almost surely, 2^131231201 is an apocalyptic number.

It is an amenable number.

131231201 is a deficient number, since it is larger than the sum of its proper divisors (3354943).

131231201 is a wasteful number, since it uses less digits than its factorization.

131231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711.

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

The square root of 131231201 is about 11455.6187523852. The cubic root of 131231201 is about 508.1739140932.

Adding to 131231201 its reverse (102132131), we get a palindrome (233363332).

The spelling of 131231201 in words is "one hundred thirty-one million, two hundred thirty-one thousand, two hundred one".