31244141020 has 48 divisors (see below), whose sum is σ = 67276758528. Its totient is φ = 12181271040.

The previous prime is 31244141009. The next prime is 31244141053. The reversal of 31244141020 is 2014144213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31244140982 and 31244141000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 873814 + ... + 908866.

It is an arithmetic number, because the mean of its divisors is an integer number (1401599136).

Almost surely, 2^31244141020 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31244141020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33638379264).

31244141020 is an abundant number, since it is smaller than the sum of its proper divisors (36032617508).

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

31244141020 is a wasteful number, since it uses less digits than its factorization.

31244141020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36190 (or 36188 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 31244141020 its reverse (2014144213), we get a palindrome (33258285233).

The spelling of 31244141020 in words is "thirty-one billion, two hundred forty-four million, one hundred forty-one thousand, twenty".