31343361225656 has 128 divisors (see below), whose sum is σ = 63517530888000. Its totient is φ = 14451218841600.

The previous prime is 31343361225653. The next prime is 31343361225661. The reversal of 31343361225656 is 65652216334313.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31343361225653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7977437900 + ... + 7977441828.

Almost surely, 2^{31343361225656} is an apocalyptic number.

It is an amenable number.

31343361225656 is an abundant number, since it is smaller than the sum of its proper divisors (32174169662344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31343361225656 is a wasteful number, since it uses less digits than its factorization.

31343361225656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6633 (or 6629 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 50.

Adding to 31343361225656 its reverse (65652216334313), we get a palindrome (96995577559969).

The spelling of 31343361225656 in words is "thirty-one trillion, three hundred forty-three billion, three hundred sixty-one million, two hundred twenty-five thousand, six hundred fifty-six".