131406403 has 2 divisors, whose sum is σ = 131406404. Its totient is φ = 131406402.

The previous prime is 131406397. The next prime is 131406419. The reversal of 131406403 is 304604131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131406403 - 2⁹ = 131405891 is a prime.

It is not a weakly prime, because it can be changed into another prime (131406463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65703201 + 65703202.

It is an arithmetic number, because the mean of its divisors is an integer number (65703202).

Almost surely, 2^131406403 is an apocalyptic number.

131406403 is a deficient number, since it is larger than the sum of its proper divisors (1).

131406403 is an equidigital number, since it uses as much as digits as its factorization.

131406403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 131406403 is about 11463.2631916047. The cubic root of 131406403 is about 508.3999616926.

The spelling of 131406403 in words is "one hundred thirty-one million, four hundred six thousand, four hundred three".