131123310011 has 4 divisors (see below), whose sum is σ = 138836445912. Its totient is φ = 123410174112.

The previous prime is 131123309987. The next prime is 131123310103. The reversal of 131123310011 is 110013321131.

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 131123310011 - 2²² = 131119115707 is a prime.

It is a super-3 number, since 3×131123310011³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 7713135883 = 131123310011 / (1 + 3 + 1 + 1 + 2 + 3 + 3 + 1 + 0 + 0 + 1 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131123310211) 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, 3856567925 + ... + 3856567958.

It is an arithmetic number, because the mean of its divisors is an integer number (34709111478).

Almost surely, 2^131123310011 is an apocalyptic number.

131123310011 is a deficient number, since it is larger than the sum of its proper divisors (7713135901).

131123310011 is an equidigital number, since it uses as much as digits as its factorization.

131123310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7713135900.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 131123310011 its reverse (110013321131), we get a palindrome (241136631142).

The spelling of 131123310011 in words is "one hundred thirty-one billion, one hundred twenty-three million, three hundred ten thousand, eleven".