131038361 has 2 divisors, whose sum is σ = 131038362. Its totient is φ = 131038360.

The previous prime is 131038343. The next prime is 131038403. The reversal of 131038361 is 163830131.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117050761 + 13987600 = 10819^2 + 3740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131038361 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 131038361.

It is not a weakly prime, because it can be changed into another prime (131038321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65519180 + 65519181.

It is an arithmetic number, because the mean of its divisors is an integer number (65519181).

Almost surely, 2^131038361 is an apocalyptic number.

It is an amenable number.

131038361 is a deficient number, since it is larger than the sum of its proper divisors (1).

131038361 is an equidigital number, since it uses as much as digits as its factorization.

131038361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 131038361 is about 11447.1988276609. The cubic root of 131038361 is about 507.9248770328.

Adding to 131038361 its reverse (163830131), we get a palindrome (294868492).

The spelling of 131038361 in words is "one hundred thirty-one million, thirty-eight thousand, three hundred sixty-one".