1203133128 has 32 divisors (see below), whose sum is σ = 3138609600. Its totient is φ = 383607488.

The previous prime is 1203133123. The next prime is 1203133147. The reversal of 1203133128 is 8213313021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1203133098 and 1203133107.

It is not an unprimeable number, because it can be changed into a prime (1203133123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1089243 + ... + 1090346.

It is an arithmetic number, because the mean of its divisors is an integer number (98081550).

Almost surely, 2^1203133128 is an apocalyptic number.

It is an amenable number.

1203133128 is an abundant number, since it is smaller than the sum of its proper divisors (1935476472).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203133128 is a wasteful number, since it uses less digits than its factorization.

1203133128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179621 (or 2179617 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1203133128 is about 34686.2094786963. The cubic root of 1203133128 is about 1063.5826113639.

Adding to 1203133128 its reverse (8213313021), we get a palindrome (9416446149).

The spelling of 1203133128 in words is "one billion, two hundred three million, one hundred thirty-three thousand, one hundred twenty-eight".