31441030020 has 72 divisors (see below), whose sum is σ = 95672153304. Its totient is φ = 8357810688.

The previous prime is 31441030013. The next prime is 31441030037. The reversal of 31441030020 is 2003014413.

It can be written as a sum of positive squares in 4 ways, for example, as 4366302084 + 27074727936 = 66078^2 + 164544^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31441029975 and 31441030002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218449 + ... + 332568.

It is an arithmetic number, because the mean of its divisors is an integer number (1328779907).

Almost surely, 2^31441030020 is an apocalyptic number.

31441030020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31441030020 is an abundant number, since it is smaller than the sum of its proper divisors (64231123284).

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

31441030020 is a wasteful number, since it uses less digits than its factorization.

31441030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551349 (or 551344 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31441030020 its reverse (2003014413), we get a palindrome (33444044433).

The spelling of 31441030020 in words is "thirty-one billion, four hundred forty-one million, thirty thousand, twenty".