131023233 has 48 divisors (see below), whose sum is σ = 220686336. Its totient is φ = 74027520.

The previous prime is 131023231. The next prime is 131023309. The reversal of 131023233 is 332320131.

It is not a de Polignac number, because 131023233 - 2¹ = 131023231 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (131023231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213435 + ... + 214047.

It is an arithmetic number, because the mean of its divisors is an integer number (4597632).

Almost surely, 2^131023233 is an apocalyptic number.

It is an amenable number.

131023233 is a deficient number, since it is larger than the sum of its proper divisors (89663103).

131023233 is a wasteful number, since it uses less digits than its factorization.

131023233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 771 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 131023233 is about 11446.5380355809. The cubic root of 131023233 is about 507.9053301276.

Adding to 131023233 its reverse (332320131), we get a palindrome (463343364).

The spelling of 131023233 in words is "one hundred thirty-one million, twenty-three thousand, two hundred thirty-three".