31020021301120 has 128 divisors (see below), whose sum is σ = 78522593292000. Its totient is φ = 11677655040000.

The previous prime is 31020021301111. The next prime is 31020021301127. The reversal of 31020021301120 is 2110312002013.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 31020021301094 and 31020021301103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31020021301127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 394371556 + ... + 394450204.

Almost surely, 2^{31020021301120} is an apocalyptic number.

It is an amenable number.

31020021301120 is an abundant number, since it is smaller than the sum of its proper divisors (47502571990880).

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

31020021301120 is a wasteful number, since it uses less digits than its factorization.

31020021301120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114936 (or 114924 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31020021301120 its reverse (2110312002013), we get a palindrome (33130333303133).

The spelling of 31020021301120 in words is "thirty-one trillion, twenty billion, twenty-one million, three hundred one thousand, one hundred twenty".