242213131 has 4 divisors (see below), whose sum is σ = 245279200. Its totient is φ = 239147064.

The previous prime is 242213129. The next prime is 242213141. The reversal of 242213131 is 131312242.

It is a happy number.

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 242213131 - 2¹ = 242213129 is a prime.

It is a super-2 number, since 2×242213131² = 117334401657646322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242213099 and 242213108.

It is not an unprimeable number, because it can be changed into a prime (242213141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1532916 + ... + 1533073.

It is an arithmetic number, because the mean of its divisors is an integer number (61319800).

Almost surely, 2^242213131 is an apocalyptic number.

242213131 is a deficient number, since it is larger than the sum of its proper divisors (3066069).

242213131 is an equidigital number, since it uses as much as digits as its factorization.

242213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066068.

The product of its digits is 288, while the sum is 19.

The square root of 242213131 is about 15563.1979682840. The cubic root of 242213131 is about 623.3508574736.

Adding to 242213131 its reverse (131312242), we get a palindrome (373525373).

The spelling of 242213131 in words is "two hundred forty-two million, two hundred thirteen thousand, one hundred thirty-one".