31043421113 has 8 divisors (see below), whose sum is σ = 32126923080. Its totient is φ = 29960788480.

The previous prime is 31043421107. The next prime is 31043421119. The reversal of 31043421113 is 31112434013.

It is an interprime number because it is at equal distance from previous prime (31043421107) and next prime (31043421119).

It can be written as a sum of positive squares in 4 ways, for example, as 13291322944 + 17752098169 = 115288^2 + 133237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31043421113 - 2¹⁴ = 31043404729 is a prime.

It is a Duffinian number.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144248 + ... + 287913.

It is an arithmetic number, because the mean of its divisors is an integer number (4015865385).

Almost surely, 2^31043421113 is an apocalyptic number.

It is an amenable number.

31043421113 is a deficient number, since it is larger than the sum of its proper divisors (1083501967).

31043421113 is a wasteful number, since it uses less digits than its factorization.

31043421113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434667.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 31043421113 its reverse (31112434013), we get a palindrome (62155855126).

The spelling of 31043421113 in words is "thirty-one billion, forty-three million, four hundred twenty-one thousand, one hundred thirteen".