31310420655 has 8 divisors (see below), whose sum is σ = 50096673072. Its totient is φ = 16698891008.

The previous prime is 31310420641. The next prime is 31310420671. The reversal of 31310420655 is 55602401313.

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

It is a cyclic number.

It is not a de Polignac number, because 31310420655 - 2¹⁷ = 31310289583 is a prime.

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, 1043680674 + ... + 1043680703.

It is an arithmetic number, because the mean of its divisors is an integer number (6262084134).

Almost surely, 2^31310420655 is an apocalyptic number.

31310420655 is a deficient number, since it is larger than the sum of its proper divisors (18786252417).

31310420655 is a wasteful number, since it uses less digits than its factorization.

31310420655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2087361385.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 31310420655 its reverse (55602401313), we get a palindrome (86912821968).

The spelling of 31310420655 in words is "thirty-one billion, three hundred ten million, four hundred twenty thousand, six hundred fifty-five".