13231121011 has 8 divisors (see below), whose sum is σ = 13530242880. Its totient is φ = 12932732928.

The previous prime is 13231120999. The next prime is 13231121069. The reversal of 13231121011 is 11012113231.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13231121011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231121081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146896 + ... + 219181.

It is an arithmetic number, because the mean of its divisors is an integer number (1691280360).

Almost surely, 2^13231121011 is an apocalyptic number.

13231121011 is a deficient number, since it is larger than the sum of its proper divisors (299121869).

13231121011 is an equidigital number, since it uses as much as digits as its factorization.

13231121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366893.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13231121011 its reverse (11012113231), we get a palindrome (24243234242).

The spelling of 13231121011 in words is "thirteen billion, two hundred thirty-one million, one hundred twenty-one thousand, eleven".