131611303 has 2 divisors, whose sum is σ = 131611304. Its totient is φ = 131611302.

The previous prime is 131611301. The next prime is 131611339. The reversal of 131611303 is 303116131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131611303 - 2¹ = 131611301 is a prime.

Together with 131611301, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131611301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65805651 + 65805652.

It is an arithmetic number, because the mean of its divisors is an integer number (65805652).

Almost surely, 2^131611303 is an apocalyptic number.

131611303 is a deficient number, since it is larger than the sum of its proper divisors (1).

131611303 is an equidigital number, since it uses as much as digits as its factorization.

131611303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 131611303 is about 11472.1969561196. The cubic root of 131611303 is about 508.6640712349.

Adding to 131611303 its reverse (303116131), we get a palindrome (434727434).

The spelling of 131611303 in words is "one hundred thirty-one million, six hundred eleven thousand, three hundred three".