128031430 has 16 divisors (see below), whose sum is σ = 230984784. Its totient is φ = 51095200.

The previous prime is 128031413. The next prime is 128031451. The reversal of 128031430 is 34130821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10021 + ... + 18880.

It is an arithmetic number, because the mean of its divisors is an integer number (14436549).

Almost surely, 2^128031430 is an apocalyptic number.

128031430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128031430 is a deficient number, since it is larger than the sum of its proper divisors (102953354).

128031430 is a wasteful number, since it uses less digits than its factorization.

128031430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29351.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 128031430 is about 11315.0974366110. The cubic root of 128031430 is about 504.0096658724.

The spelling of 128031430 in words is "one hundred twenty-eight million, thirty-one thousand, four hundred thirty".