2312221623553 has 4 divisors (see below), whose sum is σ = 2312226991620. Its totient is φ = 2312216255488.

The previous prime is 2312221623541. The next prime is 2312221623557. The reversal of 2312221623553 is 3553261222132.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1800620464384 + 511601159169 = 1341872^2 + 715263^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312221623553 - 2¹⁷ = 2312221492481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312221623557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1975600 + ... + 2920177.

It is an arithmetic number, because the mean of its divisors is an integer number (578056747905).

Almost surely, 2^{2312221623553} is an apocalyptic number.

It is an amenable number.

2312221623553 is a deficient number, since it is larger than the sum of its proper divisors (5368067).

2312221623553 is an equidigital number, since it uses as much as digits as its factorization.

2312221623553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5368066.

The product of its digits is 129600, while the sum is 37.

Adding to 2312221623553 its reverse (3553261222132), we get a palindrome (5865482845685).

The spelling of 2312221623553 in words is "two trillion, three hundred twelve billion, two hundred twenty-one million, six hundred twenty-three thousand, five hundred fifty-three".