311525553400343 has 2 divisors, whose sum is σ = 311525553400344. Its totient is φ = 311525553400342.

The previous prime is 311525553400331. The next prime is 311525553400409. The reversal of 311525553400343 is 343004355525113.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 311525553400343 - 2¹⁸ = 311525553138199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311525553400294 and 311525553400303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311525553405343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155762776700171 + 155762776700172.

It is an arithmetic number, because the mean of its divisors is an integer number (155762776700172).

Almost surely, 2^{311525553400343} is an apocalyptic number.

311525553400343 is a deficient number, since it is larger than the sum of its proper divisors (1).

311525553400343 is an equidigital number, since it uses as much as digits as its factorization.

311525553400343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620000, while the sum is 44.

The spelling of 311525553400343 in words is "three hundred eleven trillion, five hundred twenty-five billion, five hundred fifty-three million, four hundred thousand, three hundred forty-three".