242151242540331 has 4 divisors (see below), whose sum is σ = 322868323387112. Its totient is φ = 161434161693552.

The previous prime is 242151242540269. The next prime is 242151242540377. The reversal of 242151242540331 is 133045242151242.

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

It is not a de Polignac number, because 242151242540331 - 2¹⁷ = 242151242409259 is a prime.

It is a super-2 number, since 2×242151242540331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 242151242540331.

It is not an unprimeable number, because it can be changed into a prime (242151242540531) 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, 40358540423386 + ... + 40358540423391.

It is an arithmetic number, because the mean of its divisors is an integer number (80717080846778).

Almost surely, 2^{242151242540331} is an apocalyptic number.

242151242540331 is a deficient number, since it is larger than the sum of its proper divisors (80717080846781).

242151242540331 is an equidigital number, since it uses as much as digits as its factorization.

242151242540331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80717080846780.

The product of its (nonzero) digits is 230400, while the sum is 39.

Adding to 242151242540331 its reverse (133045242151242), we get a palindrome (375196484691573).

The spelling of 242151242540331 in words is "two hundred forty-two trillion, one hundred fifty-one billion, two hundred forty-two million, five hundred forty thousand, three hundred thirty-one".