31400434211 has 2 divisors, whose sum is σ = 31400434212. Its totient is φ = 31400434210.

The previous prime is 31400434183. The next prime is 31400434217. The reversal of 31400434211 is 11243400413.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31400434211 - 2⁶ = 31400434147 is a prime.

It is not a weakly prime, because it can be changed into another prime (31400434217) 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, 15700217105 + 15700217106.

It is an arithmetic number, because the mean of its divisors is an integer number (15700217106).

Almost surely, 2^31400434211 is an apocalyptic number.

31400434211 is a deficient number, since it is larger than the sum of its proper divisors (1).

31400434211 is an equidigital number, since it uses as much as digits as its factorization.

31400434211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 31400434211 its reverse (11243400413), we get a palindrome (42643834624).

The spelling of 31400434211 in words is "thirty-one billion, four hundred million, four hundred thirty-four thousand, two hundred eleven".