128511367 has 2 divisors, whose sum is σ = 128511368. Its totient is φ = 128511366.

The previous prime is 128511359. The next prime is 128511371. The reversal of 128511367 is 763115821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128511367 - 2³ = 128511359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128511377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64255683 + 64255684.

It is an arithmetic number, because the mean of its divisors is an integer number (64255684).

Almost surely, 2^128511367 is an apocalyptic number.

128511367 is a deficient number, since it is larger than the sum of its proper divisors (1).

128511367 is an equidigital number, since it uses as much as digits as its factorization.

128511367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 34.

The square root of 128511367 is about 11336.2854145439. The cubic root of 128511367 is about 504.6386553393.

The spelling of 128511367 in words is "one hundred twenty-eight million, five hundred eleven thousand, three hundred sixty-seven".