242689209331 has 16 divisors (see below), whose sum is σ = 257293713600. Its totient is φ = 228121463808.

The previous prime is 242689209313. The next prime is 242689209337. The reversal of 242689209331 is 133902986242.

It is a cyclic number.

It is not a de Polignac number, because 242689209331 - 2⁹ = 242689208819 is a prime.

It is a super-2 number, since 2×242689209331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242689209337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78819250 + ... + 78822328.

It is an arithmetic number, because the mean of its divisors is an integer number (16080857100).

Almost surely, 2^242689209331 is an apocalyptic number.

242689209331 is a deficient number, since it is larger than the sum of its proper divisors (14604504269).

242689209331 is a wasteful number, since it uses less digits than its factorization.

242689209331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7518.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 242689209331 in words is "two hundred forty-two billion, six hundred eighty-nine million, two hundred nine thousand, three hundred thirty-one".