1231555252323 has 8 divisors (see below), whose sum is σ = 1791353094336. Its totient is φ = 746397122600.

The previous prime is 1231555252271. The next prime is 1231555252357. The reversal of 1231555252323 is 3232525551321.

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 1231555252323 - 2¹² = 1231555248227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231555152323) 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, 18659928033 + ... + 18659928098.

It is an arithmetic number, because the mean of its divisors is an integer number (223919136792).

Almost surely, 2^{1231555252323} is an apocalyptic number.

1231555252323 is a deficient number, since it is larger than the sum of its proper divisors (559797842013).

1231555252323 is a wasteful number, since it uses less digits than its factorization.

1231555252323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37319856145.

The product of its digits is 270000, while the sum is 39.

The spelling of 1231555252323 in words is "one trillion, two hundred thirty-one billion, five hundred fifty-five million, two hundred fifty-two thousand, three hundred twenty-three".