242307031 has 2 divisors, whose sum is σ = 242307032. Its totient is φ = 242307030.

The previous prime is 242307029. The next prime is 242307059. The reversal of 242307031 is 130703242.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 242307031 - 2¹ = 242307029 is a prime.

It is a super-2 number, since 2×242307031² = 117425394544069922, which contains 22 as substring.

Together with 242307029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 242306993 and 242307011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (242307071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121153515 + 121153516.

It is an arithmetic number, because the mean of its divisors is an integer number (121153516).

Almost surely, 2^242307031 is an apocalyptic number.

242307031 is a deficient number, since it is larger than the sum of its proper divisors (1).

242307031 is an equidigital number, since it uses as much as digits as its factorization.

242307031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 242307031 is about 15566.2144081340. The cubic root of 242307031 is about 623.4313996020.

The spelling of 242307031 in words is "two hundred forty-two million, three hundred seven thousand, thirty-one".