242655531 has 16 divisors (see below), whose sum is σ = 328588800. Its totient is φ = 159258528.

The previous prime is 242655527. The next prime is 242655541. The reversal of 242655531 is 135556242.

It is not a de Polignac number, because 242655531 - 2² = 242655527 is a prime.

It is a super-2 number, since 2×242655531² = 117763413449783922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 242655492 and 242655501.

It is not an unprimeable number, because it can be changed into a prime (242655521) 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, 92800 + ... + 95378.

It is an arithmetic number, because the mean of its divisors is an integer number (20536800).

Almost surely, 2^242655531 is an apocalyptic number.

242655531 is a deficient number, since it is larger than the sum of its proper divisors (85933269).

242655531 is a wasteful number, since it uses less digits than its factorization.

242655531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3058.

The product of its digits is 36000, while the sum is 33.

The square root of 242655531 is about 15577.4045013924. The cubic root of 242655531 is about 623.7301414689.

The spelling of 242655531 in words is "two hundred forty-two million, six hundred fifty-five thousand, five hundred thirty-one".