31421132300000 has 144 divisors (see below), whose sum is σ = 81868762720080. Its totient is φ = 11829131520000.

The previous prime is 31421132299969. The next prime is 31421132300069. The reversal of 31421132300000 is 323112413.

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 23 ways as a sum of consecutive naturals, for example, 7541510 + ... + 10941509.

It is an arithmetic number, because the mean of its divisors is an integer number (568533074445).

Almost surely, 2^{31421132300000} is an apocalyptic number.

It is an amenable number.

31421132300000 is an abundant number, since it is smaller than the sum of its proper divisors (50447630420080).

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

31421132300000 is an equidigital number, since it uses as much as digits as its factorization.

31421132300000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18483071 (or 18483043 counting only the distinct ones).

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

Adding to 31421132300000 its reverse (323112413), we get a palindrome (31421455412413).

The spelling of 31421132300000 in words is "thirty-one trillion, four hundred twenty-one billion, one hundred thirty-two million, three hundred thousand".