131031323 has 4 divisors (see below), whose sum is σ = 131157048. Its totient is φ = 130905600.

The previous prime is 131031301. The next prime is 131031337. The reversal of 131031323 is 323130131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 323130131 = 19 ⋅17006849.

It is a cyclic number.

It is not a de Polignac number, because 131031323 - 2⁶ = 131031259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131031623) 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, 61286 + ... + 63387.

It is an arithmetic number, because the mean of its divisors is an integer number (32789262).

Almost surely, 2^131031323 is an apocalyptic number.

131031323 is a deficient number, since it is larger than the sum of its proper divisors (125725).

131031323 is a wasteful number, since it uses less digits than its factorization.

131031323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125724.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 131031323 is about 11446.8914120821. The cubic root of 131031323 is about 507.9157834125.

Adding to 131031323 its reverse (323130131), we get a palindrome (454161454).

The spelling of 131031323 in words is "one hundred thirty-one million, thirty-one thousand, three hundred twenty-three".