31030420021112 has 16 divisors (see below), whose sum is σ = 58182583221360. Its totient is φ = 15515064495424.

The previous prime is 31030420021099. The next prime is 31030420021121. The reversal of 31030420021112 is 21112002403013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17280428 + ... + 18991419.

It is an arithmetic number, because the mean of its divisors is an integer number (3636411451335).

Almost surely, 2^{31030420021112} is an apocalyptic number.

It is an amenable number.

31030420021112 is a deficient number, since it is larger than the sum of its proper divisors (27152163200248).

31030420021112 is a wasteful number, since it uses less digits than its factorization.

31030420021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36378790 (or 36378786 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31030420021112 its reverse (21112002403013), we get a palindrome (52142422424125).

The spelling of 31030420021112 in words is "thirty-one trillion, thirty billion, four hundred twenty million, twenty-one thousand, one hundred twelve".