131316533 has 2 divisors, whose sum is σ = 131316534. Its totient is φ = 131316532.

The previous prime is 131316503. The next prime is 131316547. The reversal of 131316533 is 335613131.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101646724 + 29669809 = 10082^2 + 5447^2 .

It is a cyclic number.

It is not a de Polignac number, because 131316533 - 2¹⁴ = 131300149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131316503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65658266 + 65658267.

It is an arithmetic number, because the mean of its divisors is an integer number (65658267).

Almost surely, 2^131316533 is an apocalyptic number.

It is an amenable number.

131316533 is a deficient number, since it is larger than the sum of its proper divisors (1).

131316533 is an equidigital number, since it uses as much as digits as its factorization.

131316533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2430, while the sum is 26.

The square root of 131316533 is about 11459.3426076717. The cubic root of 131316533 is about 508.2840355191.

Adding to 131316533 its reverse (335613131), we get a palindrome (466929664).

The spelling of 131316533 in words is "one hundred thirty-one million, three hundred sixteen thousand, five hundred thirty-three".