311279296403 has 2 divisors, whose sum is σ = 311279296404. Its totient is φ = 311279296402.

The previous prime is 311279296381. The next prime is 311279296411. The reversal of 311279296403 is 304692972113.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 311279296403 - 2³⁰ = 310205554579 is a prime.

It is not a weakly prime, because it can be changed into another prime (311279296463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155639648201 + 155639648202.

It is an arithmetic number, because the mean of its divisors is an integer number (155639648202).

Almost surely, 2^311279296403 is an apocalyptic number.

311279296403 is a deficient number, since it is larger than the sum of its proper divisors (1).

311279296403 is an equidigital number, since it uses as much as digits as its factorization.

311279296403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 47.

The spelling of 311279296403 in words is "three hundred eleven billion, two hundred seventy-nine million, two hundred ninety-six thousand, four hundred three".