242313131 has 4 divisors (see below), whose sum is σ = 245726064. Its totient is φ = 238900200.

The previous prime is 242313101. The next prime is 242313139. The reversal of 242313131 is 131313242.

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 242313131 - 2²² = 238118827 is a prime.

It is a super-2 number, since 2×242313131² = 117431306910046322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242313139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706360 + ... + 1706501.

It is an arithmetic number, because the mean of its divisors is an integer number (61431516).

Almost surely, 2^242313131 is an apocalyptic number.

242313131 is a deficient number, since it is larger than the sum of its proper divisors (3412933).

242313131 is an equidigital number, since it uses as much as digits as its factorization.

242313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3412932.

The product of its digits is 432, while the sum is 20.

The square root of 242313131 is about 15566.4103440710. The cubic root of 242313131 is about 623.4366311184.

Adding to 242313131 its reverse (131313242), we get a palindrome (373626373).

The spelling of 242313131 in words is "two hundred forty-two million, three hundred thirteen thousand, one hundred thirty-one".