31123243010000 has 300 divisors, whose sum is σ = 78171534701568. Its totient is φ = 11999060928000.

The previous prime is 31123243009997. The next prime is 31123243010033. The reversal of 31123243010000 is 1034232113.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1464819377 + ... + 1464840623.

Almost surely, 2^{31123243010000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31123243010000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39085767350784).

31123243010000 is an abundant number, since it is smaller than the sum of its proper divisors (47048291691568).

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

31123243010000 is a wasteful number, since it uses less digits than its factorization.

31123243010000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21456 (or 21398 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31123243010000 its reverse (1034232113), we get a palindrome (31124277242113).

The spelling of 31123243010000 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred forty-three million, ten thousand".