1231856327023 has 16 divisors (see below), whose sum is σ = 1451862213120. Its totient is φ = 1023361164000.

The previous prime is 1231856326993. The next prime is 1231856327033. The reversal of 1231856327023 is 3207236581321.

It is not a de Polignac number, because 1231856327023 - 2⁹ = 1231856326511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231856327033) 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, 20975628 + ... + 21034273.

It is an arithmetic number, because the mean of its divisors is an integer number (90741388320).

Almost surely, 2^{1231856327023} is an apocalyptic number.

1231856327023 is a deficient number, since it is larger than the sum of its proper divisors (220005886097).

1231856327023 is an equidigital number, since it uses as much as digits as its factorization.

1231856327023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42010038.

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 1231856327023 in words is "one trillion, two hundred thirty-one billion, eight hundred fifty-six million, three hundred twenty-seven thousand, twenty-three".