2031312220644 has 48 divisors (see below), whose sum is σ = 5416905449088. Its totient is φ = 580367113728.

The previous prime is 2031312220621. The next prime is 2031312220673. The reversal of 2031312220644 is 4460222131302.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9555964 + ... + 9766220.

It is an arithmetic number, because the mean of its divisors is an integer number (112852196856).

Almost surely, 2^{2031312220644} is an apocalyptic number.

It is an amenable number.

2031312220644 is an abundant number, since it is smaller than the sum of its proper divisors (3385593228444).

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

2031312220644 is a wasteful number, since it uses less digits than its factorization.

2031312220644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325284 (or 325282 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 2031312220644 its reverse (4460222131302), we get a palindrome (6491534351946).

The spelling of 2031312220644 in words is "two trillion, thirty-one billion, three hundred twelve million, two hundred twenty thousand, six hundred forty-four".