131501131 has 4 divisors (see below), whose sum is σ = 131529312. Its totient is φ = 131472952.

The previous prime is 131501119. The next prime is 131501141. The reversal of 131501131 is 131105131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131105131 = 67 ⋅1956793.

It is a cyclic number.

It is not a de Polignac number, because 131501131 - 2⁵ = 131501099 is a prime.

It is a super-2 number, since 2×131501131² = 34585094908558322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131501141) 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, 5236 + ... + 17041.

It is an arithmetic number, because the mean of its divisors is an integer number (32882328).

Almost surely, 2^131501131 is an apocalyptic number.

131501131 is a deficient number, since it is larger than the sum of its proper divisors (28181).

131501131 is an equidigital number, since it uses as much as digits as its factorization.

131501131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28180.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 131501131 is about 11467.3942550171. The cubic root of 131501131 is about 508.5220971509.

Adding to 131501131 its reverse (131105131), we get a palindrome (262606262).

The spelling of 131501131 in words is "one hundred thirty-one million, five hundred one thousand, one hundred thirty-one".