131140001 has 4 divisors (see below), whose sum is σ = 135662100. Its totient is φ = 126617904.

The previous prime is 131139991. The next prime is 131140007. The reversal of 131140001 is 100041131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 87909376 + 43230625 = 9376^2 + 6575^2 .

It is a cyclic number.

It is not a de Polignac number, because 131140001 - 2⁶ = 131139937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131140007) 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, 2261006 + ... + 2261063.

It is an arithmetic number, because the mean of its divisors is an integer number (33915525).

Almost surely, 2^131140001 is an apocalyptic number.

It is an amenable number.

131140001 is a deficient number, since it is larger than the sum of its proper divisors (4522099).

131140001 is an equidigital number, since it uses as much as digits as its factorization.

131140001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522098.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 131140001 is about 11451.6374811640. The cubic root of 131140001 is about 508.0561671936.

Adding to 131140001 its reverse (100041131), we get a palindrome (231181132).

The spelling of 131140001 in words is "one hundred thirty-one million, one hundred forty thousand, one".