1312153244243 has 8 divisors (see below), whose sum is σ = 1322789248512. Its totient is φ = 1301521991616.

The previous prime is 1312153244221. The next prime is 1312153244263. The reversal of 1312153244243 is 3424423512131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312153244243 - 2¹² = 1312153240147 is a prime.

It is a super-2 number, since 2×1312153244243² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312153244263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632330 + ... + 1739007.

It is an arithmetic number, because the mean of its divisors is an integer number (165348656064).

Almost surely, 2^{1312153244243} is an apocalyptic number.

1312153244243 is a deficient number, since it is larger than the sum of its proper divisors (10636004269).

1312153244243 is a wasteful number, since it uses less digits than its factorization.

1312153244243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375821.

The product of its digits is 69120, while the sum is 35.

Adding to 1312153244243 its reverse (3424423512131), we get a palindrome (4736576756374).

The spelling of 1312153244243 in words is "one trillion, three hundred twelve billion, one hundred fifty-three million, two hundred forty-four thousand, two hundred forty-three".