131241232511 has 4 divisors (see below), whose sum is σ = 134442238224. Its totient is φ = 128040226800.

The previous prime is 131241232501. The next prime is 131241232559. The reversal of 131241232511 is 115232142131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115232142131 = 26987 ⋅4269913.

It is a cyclic number.

It is not a de Polignac number, because 131241232511 - 2¹⁰ = 131241231487 is a prime.

It is a super-2 number, since 2×131241232511² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131241232501) 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, 1600502795 + ... + 1600502876.

It is an arithmetic number, because the mean of its divisors is an integer number (33610559556).

Almost surely, 2^131241232511 is an apocalyptic number.

131241232511 is a deficient number, since it is larger than the sum of its proper divisors (3201005713).

131241232511 is an equidigital number, since it uses as much as digits as its factorization.

131241232511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3201005712.

The product of its digits is 1440, while the sum is 26.

Adding to 131241232511 its reverse (115232142131), we get a palindrome (246473374642).

The spelling of 131241232511 in words is "one hundred thirty-one billion, two hundred forty-one million, two hundred thirty-two thousand, five hundred eleven".