1215431435023 has 16 divisors (see below), whose sum is σ = 1388985776640. Its totient is φ = 1054967737824.

The previous prime is 1215431435021. The next prime is 1215431435033. The reversal of 1215431435023 is 3205341345121.

It is not a de Polignac number, because 1215431435023 - 2¹ = 1215431435021 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1215431435023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215431435021) 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, 34431411 + ... + 34466692.

It is an arithmetic number, because the mean of its divisors is an integer number (86811611040).

Almost surely, 2^{1215431435023} is an apocalyptic number.

1215431435023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1215431435023 is a deficient number, since it is larger than the sum of its proper divisors (173554341617).

1215431435023 is a wasteful number, since it uses less digits than its factorization.

1215431435023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68898198.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 1215431435023 in words is "one trillion, two hundred fifteen billion, four hundred thirty-one million, four hundred thirty-five thousand, twenty-three".