131321123011 has 4 divisors (see below), whose sum is σ = 141422747872. Its totient is φ = 121219498152.

The previous prime is 131321122937. The next prime is 131321123027. The reversal of 131321123011 is 110321123131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131321123011 - 2⁷ = 131321122883 is a prime.

It is a super-2 number, since 2×131321123011² (a number of 23 digits) contains 22 as substring.

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 131321123011.

It is not an unprimeable number, because it can be changed into a prime (131321120011) 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, 5050812411 + ... + 5050812436.

It is an arithmetic number, because the mean of its divisors is an integer number (35355686968).

Almost surely, 2^131321123011 is an apocalyptic number.

131321123011 is a deficient number, since it is larger than the sum of its proper divisors (10101624861).

131321123011 is a wasteful number, since it uses less digits than its factorization.

131321123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101624860.

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

Adding to 131321123011 its reverse (110321123131), we get a palindrome (241642246142).

The spelling of 131321123011 in words is "one hundred thirty-one billion, three hundred twenty-one million, one hundred twenty-three thousand, eleven".