31443222113 has 16 divisors (see below), whose sum is σ = 33456776640. Its totient is φ = 29465856000.

The previous prime is 31443222101. The next prime is 31443222121. The reversal of 31443222113 is 31122234413.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31443222113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31443222193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5159198 + ... + 5165288.

It is an arithmetic number, because the mean of its divisors is an integer number (2091048540).

Almost surely, 2^31443222113 is an apocalyptic number.

It is an amenable number.

31443222113 is a deficient number, since it is larger than the sum of its proper divisors (2013554527).

31443222113 is a wasteful number, since it uses less digits than its factorization.

31443222113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9008.

The product of its digits is 3456, while the sum is 26.

Adding to 31443222113 its reverse (31122234413), we get a palindrome (62565456526).

The spelling of 31443222113 in words is "thirty-one billion, four hundred forty-three million, two hundred twenty-two thousand, one hundred thirteen".