31030101111020 has 72 divisors (see below), whose sum is σ = 72634492463904. Its totient is φ = 11124748096000.

The previous prime is 31030101111019. The next prime is 31030101111043. The reversal of 31030101111020 is 2011110103013.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 31030101110986 and 31030101111004.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90126461 + ... + 90470100.

It is an arithmetic number, because the mean of its divisors is an integer number (1008812395332).

Almost surely, 2^{31030101111020} is an apocalyptic number.

It is an amenable number.

31030101111020 is an abundant number, since it is smaller than the sum of its proper divisors (41604391352884).

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

31030101111020 is a wasteful number, since it uses less digits than its factorization.

31030101111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180596663 (or 180596650 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 31030101111020 its reverse (2011110103013), we get a palindrome (33041211214033).

The spelling of 31030101111020 in words is "thirty-one trillion, thirty billion, one hundred one million, one hundred eleven thousand, twenty".