31401340211 has 2 divisors, whose sum is σ = 31401340212. Its totient is φ = 31401340210.

The previous prime is 31401340207. The next prime is 31401340213. The reversal of 31401340211 is 11204310413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31401340211 - 2² = 31401340207 is a prime.

Together with 31401340213, 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 (31401340213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15700670105 + 15700670106.

It is an arithmetic number, because the mean of its divisors is an integer number (15700670106).

Almost surely, 2^31401340211 is an apocalyptic number.

31401340211 is a deficient number, since it is larger than the sum of its proper divisors (1).

31401340211 is an equidigital number, since it uses as much as digits as its factorization.

31401340211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 31401340211 its reverse (11204310413), we get a palindrome (42605650624).

The spelling of 31401340211 in words is "thirty-one billion, four hundred one million, three hundred forty thousand, two hundred eleven".