31142255611 has 2 divisors, whose sum is σ = 31142255612. Its totient is φ = 31142255610.

The previous prime is 31142255609. The next prime is 31142255633. The reversal of 31142255611 is 11655224113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31142255611 - 2¹ = 31142255609 is a prime.

Together with 31142255609, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31142255671) 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, 15571127805 + 15571127806.

It is an arithmetic number, because the mean of its divisors is an integer number (15571127806).

Almost surely, 2^31142255611 is an apocalyptic number.

31142255611 is a deficient number, since it is larger than the sum of its proper divisors (1).

31142255611 is an equidigital number, since it uses as much as digits as its factorization.

31142255611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 31.

Adding to 31142255611 its reverse (11655224113), we get a palindrome (42797479724).

The spelling of 31142255611 in words is "thirty-one billion, one hundred forty-two million, two hundred fifty-five thousand, six hundred eleven".