11601026231 has 4 divisors (see below), whose sum is σ = 11632128552. Its totient is φ = 11569923912.

The previous prime is 11601026209. The next prime is 11601026257. The reversal of 11601026231 is 13262010611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13262010611 = 23 ⋅576609157.

It is a cyclic number.

It is not a de Polignac number, because 11601026231 - 2⁶ = 11601026167 is a prime.

It is a super-2 number, since 2×11601026231² (a number of 21 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 = 11601026197 and 11601026206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11601026291) 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, 15550601 + ... + 15551346.

It is an arithmetic number, because the mean of its divisors is an integer number (2908032138).

Almost surely, 2^11601026231 is an apocalyptic number.

11601026231 is a deficient number, since it is larger than the sum of its proper divisors (31102321).

11601026231 is an equidigital number, since it uses as much as digits as its factorization.

11601026231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31102320.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 11601026231 its reverse (13262010611), we get a palindrome (24863036842).

It can be divided in two parts, 116010 and 26231, that added together give a palindrome (142241).

The spelling of 11601026231 in words is "eleven billion, six hundred one million, twenty-six thousand, two hundred thirty-one".