11523333421431 has 12 divisors (see below), whose sum is σ = 17925185322408. Its totient is φ = 7091282105424.

The previous prime is 11523333421403. The next prime is 11523333421447. The reversal of 11523333421431 is 13412433332511.

11523333421431 is a `hidden beast` number, since 1 + 1 + 52 + 33 + 334 + 214 + 31 = 666.

It is not a de Polignac number, because 11523333421431 - 2¹¹ = 11523333419383 is a prime.

It is a super-2 number, since 2×11523333421431² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523333421031) 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, 49245014505 + ... + 49245014738.

It is an arithmetic number, because the mean of its divisors is an integer number (1493765443534).

Almost surely, 2^{11523333421431} is an apocalyptic number.

11523333421431 is a deficient number, since it is larger than the sum of its proper divisors (6401851900977).

11523333421431 is a wasteful number, since it uses less digits than its factorization.

11523333421431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98490029262 (or 98490029259 counting only the distinct ones).

The product of its digits is 77760, while the sum is 36.

Adding to 11523333421431 its reverse (13412433332511), we get a palindrome (24935766753942).

The spelling of 11523333421431 in words is "eleven trillion, five hundred twenty-three billion, three hundred thirty-three million, four hundred twenty-one thousand, four hundred thirty-one".