131133403 has 2 divisors, whose sum is σ = 131133404. Its totient is φ = 131133402.

The previous prime is 131133391. The next prime is 131133407. The reversal of 131133403 is 304331131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131133403 - 2⁵ = 131133371 is a prime.

It is not a weakly prime, because it can be changed into another prime (131133407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65566701 + 65566702.

It is an arithmetic number, because the mean of its divisors is an integer number (65566702).

Almost surely, 2^131133403 is an apocalyptic number.

131133403 is a deficient number, since it is larger than the sum of its proper divisors (1).

131133403 is an equidigital number, since it uses as much as digits as its factorization.

131133403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 131133403 is about 11451.3493964685. The cubic root of 131133403 is about 508.0476465013.

Adding to 131133403 its reverse (304331131), we get a palindrome (435464534).

The spelling of 131133403 in words is "one hundred thirty-one million, one hundred thirty-three thousand, four hundred three".