20311031021110 has 64 divisors (see below), whose sum is σ = 38555488235520. Its totient is φ = 7682534415360.

The previous prime is 20311031021087. The next prime is 20311031021119. The reversal of 20311031021110 is 1112013011302.

It is a happy number.

It is a super-2 number, since 2×20311031021110² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311031021119) 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, 363506475 + ... + 363562345.

It is an arithmetic number, because the mean of its divisors is an integer number (602429503680).

Almost surely, 2^{20311031021110} is an apocalyptic number.

20311031021110 is a deficient number, since it is larger than the sum of its proper divisors (18244457214410).

20311031021110 is a wasteful number, since it uses less digits than its factorization.

20311031021110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59413.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 20311031021110 its reverse (1112013011302), we get a palindrome (21423044032412).

The spelling of 20311031021110 in words is "twenty trillion, three hundred eleven billion, thirty-one million, twenty-one thousand, one hundred ten".