1230203120 has 20 divisors (see below), whose sum is σ = 2860222440. Its totient is φ = 492081216.

The previous prime is 1230203111. The next prime is 1230203131. The reversal of 1230203120 is 213020321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 1230203095 and 1230203104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7688690 + ... + 7688849.

It is an arithmetic number, because the mean of its divisors is an integer number (143011122).

Almost surely, 2^1230203120 is an apocalyptic number.

1230203120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230203120 is an abundant number, since it is smaller than the sum of its proper divisors (1630019320).

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

1230203120 is a wasteful number, since it uses less digits than its factorization.

1230203120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15377552 (or 15377546 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1230203120 is about 35074.2515244445. The cubic root of 1230203120 is about 1071.5002450762.

Adding to 1230203120 its reverse (213020321), we get a palindrome (1443223441).

The spelling of 1230203120 in words is "one billion, two hundred thirty million, two hundred three thousand, one hundred twenty".