31420076544 has 60 divisors (see below), whose sum is σ = 90680481606. Its totient is φ = 10473357312.

The previous prime is 31420076521. The next prime is 31420076563. The reversal of 31420076544 is 44567002413.

31420076544 is a `hidden beast` number, since 3 + 1 + 42 + 0 + 0 + 76 + 544 = 666.

It can be written as a sum of positive squares in only one way, i.e., 24111878400 + 7308198144 = 155280^2 + 85488^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31420076499 and 31420076508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3404689 + ... + 3413904.

Almost surely, 2^31420076544 is an apocalyptic number.

It is an amenable number.

31420076544 is an abundant number, since it is smaller than the sum of its proper divisors (59260405062).

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

31420076544 is an equidigital number, since it uses as much as digits as its factorization.

31420076544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6818617 (or 6818598 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

Adding to 31420076544 its reverse (44567002413), we get a palindrome (75987078957).

The spelling of 31420076544 in words is "thirty-one billion, four hundred twenty million, seventy-six thousand, five hundred forty-four".