31230243655 has 8 divisors (see below), whose sum is σ = 40359084192. Its totient is φ = 23062333728.

The previous prime is 31230243641. The next prime is 31230243713. The reversal of 31230243655 is 55634203213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31230243655 is a prime.

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 31230243655.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240232579 + ... + 240232708.

It is an arithmetic number, because the mean of its divisors is an integer number (5044885524).

Almost surely, 2^31230243655 is an apocalyptic number.

31230243655 is a deficient number, since it is larger than the sum of its proper divisors (9128840537).

31230243655 is a wasteful number, since it uses less digits than its factorization.

31230243655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480465305.

The product of its (nonzero) digits is 64800, while the sum is 34.

Adding to 31230243655 its reverse (55634203213), we get a palindrome (86864446868).

The spelling of 31230243655 in words is "thirty-one billion, two hundred thirty million, two hundred forty-three thousand, six hundred fifty-five".