1213203330 has 24 divisors (see below), whose sum is σ = 3154328892. Its totient is φ = 323520864.

The previous prime is 1213203311. The next prime is 1213203331. The reversal of 1213203330 is 333023121.

1213203330 is a `hidden beast` number, since 12 + 1 + 320 + 3 + 330 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1160015481 + 53187849 = 34059^2 + 7293^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1213203331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6739929 + ... + 6740108.

Almost surely, 2^1213203330 is an apocalyptic number.

1213203330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1213203330 is an abundant number, since it is smaller than the sum of its proper divisors (1941125562).

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

1213203330 is a wasteful number, since it uses less digits than its factorization.

1213203330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13480050 (or 13480047 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 1213203330 is about 34831.0684590640. The cubic root of 1213203330 is about 1066.5417595709.

Adding to 1213203330 its reverse (333023121), we get a palindrome (1546226451).

The spelling of 1213203330 in words is "one billion, two hundred thirteen million, two hundred three thousand, three hundred thirty".