403242131 has 4 divisors (see below), whose sum is σ = 403465152. Its totient is φ = 403019112.

The previous prime is 403242053. The next prime is 403242139. The reversal of 403242131 is 131242304.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 403242131 - 2¹⁴ = 403225747 is a prime.

It is a super-2 number, since 2×403242131² = 325208432426842322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (403242139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108776 + ... + 112421.

It is an arithmetic number, because the mean of its divisors is an integer number (100866288).

Almost surely, 2^403242131 is an apocalyptic number.

403242131 is a deficient number, since it is larger than the sum of its proper divisors (223021).

403242131 is a wasteful number, since it uses less digits than its factorization.

403242131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223020.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 403242131 is about 20080.8896964253. The cubic root of 403242131 is about 738.7916308852.

Adding to 403242131 its reverse (131242304), we get a palindrome (534484435).

The spelling of 403242131 in words is "four hundred three million, two hundred forty-two thousand, one hundred thirty-one".