128356357 has 2 divisors, whose sum is σ = 128356358. Its totient is φ = 128356356.

The previous prime is 128356339. The next prime is 128356373. The reversal of 128356357 is 753653821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123343236 + 5013121 = 11106^2 + 2239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128356357 is a prime.

It is a super-2 number, since 2×128356357² = 32950708764622898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128356157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64178178 + 64178179.

It is an arithmetic number, because the mean of its divisors is an integer number (64178179).

Almost surely, 2^128356357 is an apocalyptic number.

It is an amenable number.

128356357 is a deficient number, since it is larger than the sum of its proper divisors (1).

128356357 is an equidigital number, since it uses as much as digits as its factorization.

128356357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 128356357 is about 11329.4464560278. The cubic root of 128356357 is about 504.4356758621.

The spelling of 128356357 in words is "one hundred twenty-eight million, three hundred fifty-six thousand, three hundred fifty-seven".