131142511 has 4 divisors (see below), whose sum is σ = 133616952. Its totient is φ = 128668072.

The previous prime is 131142491. The next prime is 131142521. The reversal of 131142511 is 115241131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115241131 = 2543 ⋅45317.

It is a cyclic number.

It is not a de Polignac number, because 131142511 - 2⁹ = 131141999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131142521) 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, 1237141 + ... + 1237246.

It is an arithmetic number, because the mean of its divisors is an integer number (33404238).

Almost surely, 2^131142511 is an apocalyptic number.

131142511 is a deficient number, since it is larger than the sum of its proper divisors (2474441).

131142511 is an equidigital number, since it uses as much as digits as its factorization.

131142511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2474440.

The product of its digits is 120, while the sum is 19.

The square root of 131142511 is about 11451.7470719537. The cubic root of 131142511 is about 508.0594085460.

Adding to 131142511 its reverse (115241131), we get a palindrome (246383642).

It can be divided in two parts, 13114 and 2511, that added together give a 6-th power (15625 = 5⁶).

The spelling of 131142511 in words is "one hundred thirty-one million, one hundred forty-two thousand, five hundred eleven".