128283511 has 2 divisors, whose sum is σ = 128283512. Its totient is φ = 128283510.

The previous prime is 128283481. The next prime is 128283521. The reversal of 128283511 is 115382821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128283511 - 2¹¹ = 128281463 is a prime.

It is a super-3 number, since 3×128283511³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128283521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64141755 + 64141756.

It is an arithmetic number, because the mean of its divisors is an integer number (64141756).

Almost surely, 2^128283511 is an apocalyptic number.

128283511 is a deficient number, since it is larger than the sum of its proper divisors (1).

128283511 is an equidigital number, since it uses as much as digits as its factorization.

128283511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 31.

The square root of 128283511 is about 11326.2311030634. The cubic root of 128283511 is about 504.3402304532.

The spelling of 128283511 in words is "one hundred twenty-eight million, two hundred eighty-three thousand, five hundred eleven".