1312442133 has 16 divisors (see below), whose sum is σ = 1855197696. Its totient is φ = 823849920.

The previous prime is 1312442129. The next prime is 1312442137. The reversal of 1312442133 is 3312442131.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1312442129) and next prime (1312442137).

It is not a de Polignac number, because 1312442133 - 2² = 1312442129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312442137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187266 + ... + 194147.

It is an arithmetic number, because the mean of its divisors is an integer number (115949856).

Almost surely, 2^1312442133 is an apocalyptic number.

It is an amenable number.

1312442133 is a deficient number, since it is larger than the sum of its proper divisors (542755563).

1312442133 is a wasteful number, since it uses less digits than its factorization.

1312442133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381484.

The product of its digits is 1728, while the sum is 24.

The square root of 1312442133 is about 36227.6432161961. The cubic root of 1312442133 is about 1094.8636939651.

Adding to 1312442133 its reverse (3312442131), we get a palindrome (4624884264).

The spelling of 1312442133 in words is "one billion, three hundred twelve million, four hundred forty-two thousand, one hundred thirty-three".