31111421266 has 8 divisors (see below), whose sum is σ = 46696140540. Its totient is φ = 15546041088.

The previous prime is 31111421249. The next prime is 31111421281. The reversal of 31111421266 is 66212411113.

It can be written as a sum of positive squares in 2 ways, for example, as 22899255625 + 8212165641 = 151325^2 + 90621^2 .

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

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 4830751 + ... + 4837186.

Almost surely, 2^31111421266 is an apocalyptic number.

31111421266 is a deficient number, since it is larger than the sum of its proper divisors (15584719274).

31111421266 is a wasteful number, since it uses less digits than its factorization.

31111421266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9669548.

The product of its digits is 1728, while the sum is 28.

Adding to 31111421266 its reverse (66212411113), we get a palindrome (97323832379).

The spelling of 31111421266 in words is "thirty-one billion, one hundred eleven million, four hundred twenty-one thousand, two hundred sixty-six".