128373011 has 4 divisors (see below), whose sum is σ = 138247872. Its totient is φ = 118498152.

The previous prime is 128372989. The next prime is 128373013. The reversal of 128373011 is 110373821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110373821 = 8719 ⋅12659.

It is a cyclic number.

It is not a de Polignac number, because 128373011 - 2⁶ = 128372947 is a prime.

It is a super-2 number, since 2×128373011² = 32959259906412242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128373013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4937411 + ... + 4937436.

It is an arithmetic number, because the mean of its divisors is an integer number (34561968).

Almost surely, 2^128373011 is an apocalyptic number.

128373011 is a deficient number, since it is larger than the sum of its proper divisors (9874861).

128373011 is an equidigital number, since it uses as much as digits as its factorization.

128373011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9874860.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 128373011 is about 11330.1814195537. The cubic root of 128373011 is about 504.4574914507.

The spelling of 128373011 in words is "one hundred twenty-eight million, three hundred seventy-three thousand, eleven".