1312232233 has 4 divisors (see below), whose sum is σ = 1413173188. Its totient is φ = 1211291280.

The previous prime is 1312232231. The next prime is 1312232239. The reversal of 1312232233 is 3322322131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 340476304 + 971755929 = 18452^2 + 31173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312232233 - 2¹ = 1312232231 is a prime.

It is a super-3 number, since 3×1312232233³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312232231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50470458 + ... + 50470483.

It is an arithmetic number, because the mean of its divisors is an integer number (353293297).

Almost surely, 2^1312232233 is an apocalyptic number.

1312232233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1312232233 is a deficient number, since it is larger than the sum of its proper divisors (100940955).

1312232233 is a wasteful number, since it uses less digits than its factorization.

1312232233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100940954.

The product of its digits is 1296, while the sum is 22.

The square root of 1312232233 is about 36224.7461412775. The cubic root of 1312232233 is about 1094.8053233556.

Adding to 1312232233 its reverse (3322322131), we get a palindrome (4634554364).

The spelling of 1312232233 in words is "one billion, three hundred twelve million, two hundred thirty-two thousand, two hundred thirty-three".