31550689000000 has 441 divisors, whose sum is σ = 80804603324557. Its totient is φ = 12222592000000.

The previous prime is 31550688999997. The next prime is 31550689000003. The reversal of 31550689000000 is 98605513.

The square root of 31550689000000 is 5617000.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (31550688999997) and next prime (31550689000003).

It can be written as a sum of positive squares in 31 ways, for example, as 426429896256 + 31124259103744 = 653016^2 + 5578912^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31550689000003) 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 62 ways as a sum of consecutive naturals, for example, 230296999932 + ... + 230297000068.

Almost surely, 2^{31550689000000} is an apocalyptic number.

31550689000000 is the 5617000-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31550689000000

31550689000000 is an abundant number, since it is smaller than the sum of its proper divisors (49253914324557).

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

31550689000000 is an frugal number, since it uses more digits than its factorization.

31550689000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 31550689000000 in words is "thirty-one trillion, five hundred fifty billion, six hundred eighty-nine million", and thus it is an aban number.