131031201 has 32 divisors (see below), whose sum is σ = 211368960. Its totient is φ = 70531776.

The previous prime is 131031181. The next prime is 131031209. The reversal of 131031201 is 102130131.

It is not a de Polignac number, because 131031201 - 2⁵ = 131031169 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131031209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77770 + ... + 79436.

It is an arithmetic number, because the mean of its divisors is an integer number (6605280).

Almost surely, 2^131031201 is an apocalyptic number.

It is an amenable number.

131031201 is a deficient number, since it is larger than the sum of its proper divisors (80337759).

131031201 is a wasteful number, since it uses less digits than its factorization.

131031201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 131031201 is about 11446.8860831232. The cubic root of 131031201 is about 507.9156257766.

Adding to 131031201 its reverse (102130131), we get a palindrome (233161332).

The spelling of 131031201 in words is "one hundred thirty-one million, thirty-one thousand, two hundred one".