311525779547 has 2 divisors, whose sum is σ = 311525779548. Its totient is φ = 311525779546.

The previous prime is 311525779517. The next prime is 311525779577. The reversal of 311525779547 is 745977525113.

It is a balanced prime because it is at equal distance from previous prime (311525779517) and next prime (311525779577).

It is a cyclic number.

It is not a de Polignac number, because 311525779547 - 2¹⁰ = 311525778523 is a prime.

It is a super-2 number, since 2×311525779547² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 311525779492 and 311525779501.

It is not a weakly prime, because it can be changed into another prime (311525779517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155762889773 + 155762889774.

It is an arithmetic number, because the mean of its divisors is an integer number (155762889774).

Almost surely, 2^311525779547 is an apocalyptic number.

311525779547 is a deficient number, since it is larger than the sum of its proper divisors (1).

311525779547 is an equidigital number, since it uses as much as digits as its factorization.

311525779547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9261000, while the sum is 56.

The spelling of 311525779547 in words is "three hundred eleven billion, five hundred twenty-five million, seven hundred seventy-nine thousand, five hundred forty-seven".