20111031302 has 32 divisors (see below), whose sum is σ = 31733570880. Its totient is φ = 9545639040.

The previous prime is 20111031299. The next prime is 20111031307. The reversal of 20111031302 is 20313011102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20111031307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1529468 + ... + 1542560.

It is an arithmetic number, because the mean of its divisors is an integer number (991674090).

Almost surely, 2^20111031302 is an apocalyptic number.

20111031302 is a deficient number, since it is larger than the sum of its proper divisors (11622539578).

20111031302 is a wasteful number, since it uses less digits than its factorization.

20111031302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13568.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20111031302 its reverse (20313011102), we get a palindrome (40424042404).

The spelling of 20111031302 in words is "twenty billion, one hundred eleven million, thirty-one thousand, three hundred two".