1312233442 has 32 divisors (see below), whose sum is σ = 2236187520. Its totient is φ = 572520960.

The previous prime is 1312233401. The next prime is 1312233449. The reversal of 1312233442 is 2443322131.

It is a super-3 number, since 3×1312233442³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1312233449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 245842 + ... + 251122.

It is an arithmetic number, because the mean of its divisors is an integer number (69880860).

Almost surely, 2^1312233442 is an apocalyptic number.

1312233442 is a deficient number, since it is larger than the sum of its proper divisors (923954078).

1312233442 is a wasteful number, since it uses less digits than its factorization.

1312233442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818.

The product of its digits is 3456, while the sum is 25.

The square root of 1312233442 is about 36224.7628287612. The cubic root of 1312233442 is about 1094.8056595814.

Adding to 1312233442 its reverse (2443322131), we get a palindrome (3755555573).

It can be divided in two parts, 13122 and 33442, that added together give a palindrome (46564).

The spelling of 1312233442 in words is "one billion, three hundred twelve million, two hundred thirty-three thousand, four hundred forty-two".