31312401011 has 2 divisors, whose sum is σ = 31312401012. Its totient is φ = 31312401010.

The previous prime is 31312400983. The next prime is 31312401013. The reversal of 31312401011 is 11010421313.

It is a strong prime.

It is an emirp because it is prime and its reverse (11010421313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31312401011 - 2¹⁴ = 31312384627 is a prime.

Together with 31312401013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31312401013) 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, 15656200505 + 15656200506.

It is an arithmetic number, because the mean of its divisors is an integer number (15656200506).

Almost surely, 2^31312401011 is an apocalyptic number.

31312401011 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312401011 is an equidigital number, since it uses as much as digits as its factorization.

31312401011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31312401011 its reverse (11010421313), we get a palindrome (42322822324).

The spelling of 31312401011 in words is "thirty-one billion, three hundred twelve million, four hundred one thousand, eleven".