1023231055155 has 8 divisors (see below), whose sum is σ = 1637169688272. Its totient is φ = 545723229408.

The previous prime is 1023231055141. The next prime is 1023231055229. The reversal of 1023231055155 is 5515501323201.

It is a happy number.

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

It is not a de Polignac number, because 1023231055155 - 2¹⁶ = 1023230989619 is a prime.

It is a super-2 number, since 2×1023231055155² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34107701824 + ... + 34107701853.

It is an arithmetic number, because the mean of its divisors is an integer number (204646211034).

Almost surely, 2^{1023231055155} is an apocalyptic number.

1023231055155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1023231055155 is a deficient number, since it is larger than the sum of its proper divisors (613938633117).

1023231055155 is an equidigital number, since it uses as much as digits as its factorization.

1023231055155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68215403685.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 1023231055155 its reverse (5515501323201), we get a palindrome (6538732378356).

The spelling of 1023231055155 in words is "one trillion, twenty-three billion, two hundred thirty-one million, fifty-five thousand, one hundred fifty-five".