31201111268 has 6 divisors (see below), whose sum is σ = 54601944726. Its totient is φ = 15600555632.

The previous prime is 31201111267. The next prime is 31201111273. The reversal of 31201111268 is 86211110213.

It can be written as a sum of positive squares in only one way, i.e., 29531735104 + 1669376164 = 171848^2 + 40858^2 .

It is not an unprimeable number, because it can be changed into a prime (31201111267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3900138905 + ... + 3900138912.

It is an arithmetic number, because the mean of its divisors is an integer number (9100324121).

Almost surely, 2^31201111268 is an apocalyptic number.

It is an amenable number.

31201111268 is a deficient number, since it is larger than the sum of its proper divisors (23400833458).

31201111268 is a wasteful number, since it uses less digits than its factorization.

31201111268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7800277821 (or 7800277819 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 31201111268 in words is "thirty-one billion, two hundred one million, one hundred eleven thousand, two hundred sixty-eight".