23211450135513 has 12 divisors (see below), whose sum is σ = 34433802904228. Its totient is φ = 15056075763360.

The previous prime is 23211450135443. The next prime is 23211450135521. The reversal of 23211450135513 is 31553105411232.

It is a happy number.

23211450135513 is a `hidden beast` number, since 2 + 3 + 2 + 1 + 1 + 4 + 5 + 0 + 135 + 513 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 8454765813264 + 14756684322249 = 2907708^2 + 3841443^2 .

It is not a de Polignac number, because 23211450135513 - 2¹⁰ = 23211450134489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211450135553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34852026898 + ... + 34852027563.

Almost surely, 2^{23211450135513} is an apocalyptic number.

It is an amenable number.

23211450135513 is a deficient number, since it is larger than the sum of its proper divisors (11222352768715).

23211450135513 is a wasteful number, since it uses less digits than its factorization.

23211450135513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69704054504 (or 69704054501 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

Adding to 23211450135513 its reverse (31553105411232), we get a palindrome (54764555546745).

The spelling of 23211450135513 in words is "twenty-three trillion, two hundred eleven billion, four hundred fifty million, one hundred thirty-five thousand, five hundred thirteen".