11431122402231 has 48 divisors (see below), whose sum is σ = 18911893801216. Its totient is φ = 6517722267648.

The previous prime is 11431122402169. The next prime is 11431122402241. The reversal of 11431122402231 is 13220422113411.

11431122402231 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 1 + 1 + 22 + 402 + 231 = 666.

It is not a de Polignac number, because 11431122402231 - 2¹⁰ = 11431122401207 is a prime.

It is a super-2 number, since 2×11431122402231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11431122402195 and 11431122402204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11431122402241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 119985591 + ... + 120080823.

Almost surely, 2^{11431122402231} is an apocalyptic number.

11431122402231 is a deficient number, since it is larger than the sum of its proper divisors (7480771398985).

11431122402231 is a wasteful number, since it uses less digits than its factorization.

11431122402231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99412 (or 99409 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 11431122402231 its reverse (13220422113411), we get a palindrome (24651544515642).

The spelling of 11431122402231 in words is "eleven trillion, four hundred thirty-one billion, one hundred twenty-two million, four hundred two thousand, two hundred thirty-one".