31102002023120 has 160 divisors (see below), whose sum is σ = 82885851037440. Its totient is φ = 10632153784320.

The previous prime is 31102002023069. The next prime is 31102002023129. The reversal of 31102002023120 is 2132020020113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102002023129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 889602440 + ... + 889637400.

It is an arithmetic number, because the mean of its divisors is an integer number (518036568984).

Almost surely, 2^{31102002023120} 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 31102002023120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41442925518720).

31102002023120 is an abundant number, since it is smaller than the sum of its proper divisors (51783849014320).

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

31102002023120 is a wasteful number, since it uses less digits than its factorization.

31102002023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39613 (or 39607 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31102002023120 its reverse (2132020020113), we get a palindrome (33234022043233).

The spelling of 31102002023120 in words is "thirty-one trillion, one hundred two billion, two million, twenty-three thousand, one hundred twenty".