31150421201040 has 160 divisors (see below), whose sum is σ = 98445898975872. Its totient is φ = 8145916416000.

The previous prime is 31150421200891. The next prime is 31150421201047. The reversal of 31150421201040 is 4010212405113.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 31150421201040.

It is not an unprimeable number, because it can be changed into a prime (31150421201047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1631700 + ... + 8059980.

Almost surely, 2^{31150421201040} is an apocalyptic number.

31150421201040 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 31150421201040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49222949487936).

31150421201040 is an abundant number, since it is smaller than the sum of its proper divisors (67295477774832).

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

31150421201040 is a wasteful number, since it uses less digits than its factorization.

31150421201040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6428689 (or 6428683 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 31150421201040 its reverse (4010212405113), we get a palindrome (35160633606153).

The spelling of 31150421201040 in words is "thirty-one trillion, one hundred fifty billion, four hundred twenty-one million, two hundred one thousand, forty".