11001431061 has 24 divisors (see below), whose sum is σ = 16043539200. Its totient is φ = 7263962496.

The previous prime is 11001431057. The next prime is 11001431099. The reversal of 11001431061 is 16013410011.

It is not a de Polignac number, because 11001431061 - 2² = 11001431057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001431041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1724700 + ... + 1731066.

It is an arithmetic number, because the mean of its divisors is an integer number (668480800).

Almost surely, 2^11001431061 is an apocalyptic number.

It is an amenable number.

11001431061 is a deficient number, since it is larger than the sum of its proper divisors (5042108139).

11001431061 is a wasteful number, since it uses less digits than its factorization.

11001431061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8185 (or 8182 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11001431061 its reverse (16013410011), we get a palindrome (27014841072).

The spelling of 11001431061 in words is "eleven billion, one million, four hundred thirty-one thousand, sixty-one".