1623244036431 has 4 divisors (see below), whose sum is σ = 2164325381912. Its totient is φ = 1082162690952.

The previous prime is 1623244036429. The next prime is 1623244036487. The reversal of 1623244036431 is 1346304423261.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1623244036431 - 2¹ = 1623244036429 is a prime.

It is a super-2 number, since 2×1623244036431² (a number of 25 digits) contains 22 as substring.

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 1623244036431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623244026431) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 270540672736 + ... + 270540672741.

It is an arithmetic number, because the mean of its divisors is an integer number (541081345478).

Almost surely, 2^{1623244036431} is an apocalyptic number.

1623244036431 is a deficient number, since it is larger than the sum of its proper divisors (541081345481).

1623244036431 is an equidigital number, since it uses as much as digits as its factorization.

1623244036431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541081345480.

The product of its (nonzero) digits is 248832, while the sum is 39.

Adding to 1623244036431 its reverse (1346304423261), we get a palindrome (2969548459692).

The spelling of 1623244036431 in words is "one trillion, six hundred twenty-three billion, two hundred forty-four million, thirty-six thousand, four hundred thirty-one".