130405523 has 2 divisors, whose sum is σ = 130405524. Its totient is φ = 130405522.

The previous prime is 130405511. The next prime is 130405549. The reversal of 130405523 is 325504031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 130405523 - 2⁴ = 130405507 is a prime.

It is not a weakly prime, because it can be changed into another prime (130405553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65202761 + 65202762.

It is an arithmetic number, because the mean of its divisors is an integer number (65202762).

Almost surely, 2^130405523 is an apocalyptic number.

130405523 is a deficient number, since it is larger than the sum of its proper divisors (1).

130405523 is an equidigital number, since it uses as much as digits as its factorization.

130405523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 130405523 is about 11419.5237641506. The cubic root of 130405523 is about 507.1058980217.

Adding to 130405523 its reverse (325504031), we get a palindrome (455909554).

The spelling of 130405523 in words is "one hundred thirty million, four hundred five thousand, five hundred twenty-three".