31143101042240 has 224 divisors, whose sum is σ = 81304445122560. Its totient is φ = 11268469094400.

The previous prime is 31143101042219. The next prime is 31143101042267. The reversal of 31143101042240 is 4224010134113.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 574961399 + ... + 575015561.

Almost surely, 2^{31143101042240} 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 31143101042240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40652222561280).

31143101042240 is an abundant number, since it is smaller than the sum of its proper divisors (50161344080320).

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

31143101042240 is a wasteful number, since it uses less digits than its factorization.

31143101042240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55001 (or 54991 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 31143101042240 its reverse (4224010134113), we get a palindrome (35367111176353).

The spelling of 31143101042240 in words is "thirty-one trillion, one hundred forty-three billion, one hundred one million, forty-two thousand, two hundred forty".