242309687631 has 8 divisors (see below), whose sum is σ = 352450454784. Its totient is φ = 146854356120.

The previous prime is 242309687611. The next prime is 242309687639. The reversal of 242309687631 is 136786903242.

242309687631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-242309687631 is a prime.

It is a super-2 number, since 2×242309687631² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242309687639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671358871 + ... + 3671358936.

It is an arithmetic number, because the mean of its divisors is an integer number (44056306848).

Almost surely, 2^242309687631 is an apocalyptic number.

242309687631 is a deficient number, since it is larger than the sum of its proper divisors (110140767153).

242309687631 is a wasteful number, since it uses less digits than its factorization.

242309687631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7342717821.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The spelling of 242309687631 in words is "two hundred forty-two billion, three hundred nine million, six hundred eighty-seven thousand, six hundred thirty-one".