31440050331000 has 128 divisors (see below), whose sum is σ = 99755550086400. Its totient is φ = 8241911452800.

The previous prime is 31440050330981. The next prime is 31440050331007. The reversal of 31440050331000 is 13305004413.

It is a happy number.

It is a super-2 number, since 2×31440050331000² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31440050331007) by changing a digit.

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, 88636702 + ... + 88990701.

It is an arithmetic number, because the mean of its divisors is an integer number (779340235050).

Almost surely, 2^{31440050331000} is an apocalyptic number.

31440050331000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31440050331000 is an abundant number, since it is smaller than the sum of its proper divisors (68315499755400).

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

31440050331000 is a wasteful number, since it uses less digits than its factorization.

31440050331000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177627486 (or 177627472 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 31440050331000 its reverse (13305004413), we get a palindrome (31453355335413).

The spelling of 31440050331000 in words is "thirty-one trillion, four hundred forty billion, fifty million, three hundred thirty-one thousand".