131223311011 has 16 divisors (see below), whose sum is σ = 146828908800. Its totient is φ = 116441555328.

The previous prime is 131223310991. The next prime is 131223311029. The reversal of 131223311011 is 110113322131.

It is a cyclic number.

It is not a de Polignac number, because 131223311011 - 2¹¹ = 131223308963 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131223311011.

It is not an unprimeable number, because it can be changed into a prime (131223311041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 673651 + ... + 846316.

It is an arithmetic number, because the mean of its divisors is an integer number (9176806800).

Almost surely, 2^131223311011 is an apocalyptic number.

131223311011 is a deficient number, since it is larger than the sum of its proper divisors (15605597789).

131223311011 is a wasteful number, since it uses less digits than its factorization.

131223311011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1520238.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 131223311011 its reverse (110113322131), we get a palindrome (241336633142).

The spelling of 131223311011 in words is "one hundred thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, eleven".