242253331 has 4 divisors (see below), whose sum is σ = 242332992. Its totient is φ = 242173672.

The previous prime is 242253317. The next prime is 242253343. The reversal of 242253331 is 133352242.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133352242 = 2 ⋅66676121.

It is a cyclic number.

It is not a de Polignac number, because 242253331 - 2⁷ = 242253203 is a prime.

It is a super-2 number, since 2×242253331² = 117373352761191122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242253296 and 242253305.

It is not an unprimeable number, because it can be changed into a prime (242253311) 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, 35080 + ... + 41413.

It is an arithmetic number, because the mean of its divisors is an integer number (60583248).

Almost surely, 2^242253331 is an apocalyptic number.

242253331 is a deficient number, since it is larger than the sum of its proper divisors (79661).

242253331 is an equidigital number, since it uses as much as digits as its factorization.

242253331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79660.

The product of its digits is 4320, while the sum is 25.

The square root of 242253331 is about 15564.4894230424. The cubic root of 242253331 is about 623.3853413159.

It can be divided in two parts, 24225 and 3331, that added together give a square (27556 = 166²).

The spelling of 242253331 in words is "two hundred forty-two million, two hundred fifty-three thousand, three hundred thirty-one".