311909478029 has 2 divisors, whose sum is σ = 311909478030. Its totient is φ = 311909478028.

The previous prime is 311909477941. The next prime is 311909478059. The reversal of 311909478029 is 920874909113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283753309225 + 28156168804 = 532685^2 + 167798^2 .

It is a cyclic number.

It is not a de Polignac number, because 311909478029 - 2¹² = 311909473933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311909478059) 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, 155954739014 + 155954739015.

It is an arithmetic number, because the mean of its divisors is an integer number (155954739015).

Almost surely, 2^311909478029 is an apocalyptic number.

It is an amenable number.

311909478029 is a deficient number, since it is larger than the sum of its proper divisors (1).

311909478029 is an equidigital number, since it uses as much as digits as its factorization.

311909478029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 311909478029 in words is "three hundred eleven billion, nine hundred nine million, four hundred seventy-eight thousand, twenty-nine".