31043421112 has 32 divisors (see below), whose sum is σ = 64367754480. Its totient is φ = 13917346560.

The previous prime is 31043421107. The next prime is 31043421119. The reversal of 31043421112 is 21112434013.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31043421119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2409783 + ... + 2422630.

Almost surely, 2^31043421112 is an apocalyptic number.

It is an amenable number.

31043421112 is an abundant number, since it is smaller than the sum of its proper divisors (33324333368).

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

31043421112 is a wasteful number, since it uses less digits than its factorization.

31043421112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832503 (or 4832499 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31043421112 its reverse (21112434013), we get a palindrome (52155855125).

The spelling of 31043421112 in words is "thirty-one billion, forty-three million, four hundred twenty-one thousand, one hundred twelve".