131766403 has 2 divisors, whose sum is σ = 131766404. Its totient is φ = 131766402.

The previous prime is 131766377. The next prime is 131766413. The reversal of 131766403 is 304667131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131766403 is a prime.

It is a super-3 number, since 3×131766403³ (a number of 25 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (131766413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65883201 + 65883202.

It is an arithmetic number, because the mean of its divisors is an integer number (65883202).

Almost surely, 2^131766403 is an apocalyptic number.

131766403 is a deficient number, since it is larger than the sum of its proper divisors (1).

131766403 is an equidigital number, since it uses as much as digits as its factorization.

131766403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 131766403 is about 11478.9547869133. The cubic root of 131766403 is about 508.8638079459.

The spelling of 131766403 in words is "one hundred thirty-one million, seven hundred sixty-six thousand, four hundred three".