31421340340044 has 24 divisors (see below), whose sum is σ = 73334568207600. Its totient is φ = 10471193339904.

The previous prime is 31421340339973. The next prime is 31421340340109. The reversal of 31421340340044 is 44004304312413.

It is a junction number, because it is equal to n+sod(n) for n = 31421340339987 and 31421340340014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323296069 + ... + 323393244.

It is an arithmetic number, because the mean of its divisors is an integer number (3055607008650).

Almost surely, 2^{31421340340044} is an apocalyptic number.

It is an amenable number.

31421340340044 is an abundant number, since it is smaller than the sum of its proper divisors (41913227867556).

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

31421340340044 is a wasteful number, since it uses less digits than its factorization.

31421340340044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646693369 (or 646693367 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 31421340340044 its reverse (44004304312413), we get a palindrome (75425644652457).

The spelling of 31421340340044 in words is "thirty-one trillion, four hundred twenty-one billion, three hundred forty million, three hundred forty thousand, forty-four".