1230023128 has 8 divisors (see below), whose sum is σ = 2306293380. Its totient is φ = 615011560.

The previous prime is 1230023107. The next prime is 1230023129. The reversal of 1230023128 is 8213200321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1230023099 and 1230023108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230023129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76876438 + ... + 76876453.

Almost surely, 2^1230023128 is an apocalyptic number.

It is an amenable number.

1230023128 is a deficient number, since it is larger than the sum of its proper divisors (1076270252).

1230023128 is a wasteful number, since it uses less digits than its factorization.

1230023128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153752897 (or 153752893 counting only the distinct ones).

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

The square root of 1230023128 is about 35071.6855597218. The cubic root of 1230023128 is about 1071.4479851754.

Adding to 1230023128 its reverse (8213200321), we get a palindrome (9443223449).

The spelling of 1230023128 in words is "one billion, two hundred thirty million, twenty-three thousand, one hundred twenty-eight".