31422440004440 has 32 divisors (see below), whose sum is σ = 70706361764880. Its totient is φ = 12567932134272.

The previous prime is 31422440004407. The next prime is 31422440004443. The reversal of 31422440004440 is 4440004422413.

It is a junction number, because it is equal to n+sod(n) for n = 31422440004397 and 31422440004406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31422440004443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32133119 + ... + 33096558.

Almost surely, 2^{31422440004440} is an apocalyptic number.

It is an amenable number.

31422440004440 is an abundant number, since it is smaller than the sum of its proper divisors (39283921760440).

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

31422440004440 is a wasteful number, since it uses less digits than its factorization.

31422440004440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65241731 (or 65241727 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 31422440004440 its reverse (4440004422413), we get a palindrome (35862444426853).

The spelling of 31422440004440 in words is "thirty-one trillion, four hundred twenty-two billion, four hundred forty million, four thousand, four hundred forty".