31441331420 has 24 divisors (see below), whose sum is σ = 66116173200. Its totient is φ = 12559508352.

The previous prime is 31441331419. The next prime is 31441331473. The reversal of 31441331420 is 2413314413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31441331420.

It is a congruent number.

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, 1048865 + ... + 1078424.

It is an arithmetic number, because the mean of its divisors is an integer number (2754840550).

Almost surely, 2^31441331420 is an apocalyptic number.

It is an amenable number.

31441331420 is an abundant number, since it is smaller than the sum of its proper divisors (34674841780).

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

31441331420 is a wasteful number, since it uses less digits than its factorization.

31441331420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128037 (or 2128035 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31441331420 its reverse (2413314413), we get a palindrome (33854645833).

The spelling of 31441331420 in words is "thirty-one billion, four hundred forty-one million, three hundred thirty-one thousand, four hundred twenty".