31663453226340 has 288 divisors, whose sum is σ = 97590999461760. Its totient is φ = 7625173450752.

The previous prime is 31663453226323. The next prime is 31663453226341. The reversal of 31663453226340 is 4362235436613.

It is a self number, because there is not a number n which added to its sum of digits gives 31663453226340.

It is not an unprimeable number, because it can be changed into a prime (31663453226341) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 773409591 + ... + 773450529.

It is an arithmetic number, because the mean of its divisors is an integer number (338857637020).

Almost surely, 2^{31663453226340} is an apocalyptic number.

31663453226340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31663453226340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48795499730880).

31663453226340 is an abundant number, since it is smaller than the sum of its proper divisors (65927546235420).

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

31663453226340 is a wasteful number, since it uses less digits than its factorization.

31663453226340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41423 (or 41368 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 48.

The spelling of 31663453226340 in words is "thirty-one trillion, six hundred sixty-three billion, four hundred fifty-three million, two hundred twenty-six thousand, three hundred forty".