1231501301223 has 16 divisors (see below), whose sum is σ = 1686065068800. Its totient is φ = 799064784320.

The previous prime is 1231501301213. The next prime is 1231501301231. The reversal of 1231501301223 is 3221031051321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1231501301223 - 2¹⁰ = 1231501300199 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231501301193 and 1231501301202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231501301213) 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, 11896203 + ... + 11999276.

It is an arithmetic number, because the mean of its divisors is an integer number (105379066800).

Almost surely, 2^{1231501301223} is an apocalyptic number.

1231501301223 is a deficient number, since it is larger than the sum of its proper divisors (454563767577).

1231501301223 is a wasteful number, since it uses less digits than its factorization.

1231501301223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23895942.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 1231501301223 its reverse (3221031051321), we get a palindrome (4452532352544).

The spelling of 1231501301223 in words is "one trillion, two hundred thirty-one billion, five hundred one million, three hundred one thousand, two hundred twenty-three".