1233213331 has 12 divisors (see below), whose sum is σ = 1435199808. Its totient is φ = 1056564432.

The previous prime is 1233213329. The next prime is 1233213341. The reversal of 1233213331 is 1333123321.

It is not a de Polignac number, because 1233213331 - 2¹ = 1233213329 is a prime.

It is a super-2 number, since 2×1233213331² = 3041630239512231122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1233213341) 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, 144670 + ... + 152956.

It is an arithmetic number, because the mean of its divisors is an integer number (119599984).

Almost surely, 2^1233213331 is an apocalyptic number.

1233213331 is a deficient number, since it is larger than the sum of its proper divisors (201986477).

1233213331 is an equidigital number, since it uses as much as digits as its factorization.

1233213331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11338 (or 11331 counting only the distinct ones).

The product of its digits is 972, while the sum is 22.

The square root of 1233213331 is about 35117.1372836682. The cubic root of 1233213331 is about 1072.3734923584.

Adding to 1233213331 its reverse (1333123321), we get a palindrome (2566336652).

The spelling of 1233213331 in words is "one billion, two hundred thirty-three million, two hundred thirteen thousand, three hundred thirty-one".