31444101020 has 12 divisors (see below), whose sum is σ = 66032612184. Its totient is φ = 12577640400.

The previous prime is 31444100999. The next prime is 31444101023. The reversal of 31444101020 is 2010144413.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1572205051 = 31444101020 / (3 + 1 + 4 + 4 + 4 + 1 + 0 + 1 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 31444100983 and 31444101001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31444101023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786102506 + ... + 786102545.

It is an arithmetic number, because the mean of its divisors is an integer number (5502717682).

Almost surely, 2^31444101020 is an apocalyptic number.

It is an amenable number.

31444101020 is an abundant number, since it is smaller than the sum of its proper divisors (34588511164).

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

31444101020 is a wasteful number, since it uses less digits than its factorization.

31444101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572205060 (or 1572205058 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 31444101020 its reverse (2010144413), we get a palindrome (33454245433).

The spelling of 31444101020 in words is "thirty-one billion, four hundred forty-four million, one hundred one thousand, twenty".