131143233 has 16 divisors (see below), whose sum is σ = 189072576. Its totient is φ = 80376000.

The previous prime is 131143223. The next prime is 131143247. The reversal of 131143233 is 332341131.

It is not a de Polignac number, because 131143233 - 2¹³ = 131135041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131143223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3091 + ... + 16487.

It is an arithmetic number, because the mean of its divisors is an integer number (11817036).

Almost surely, 2^131143233 is an apocalyptic number.

131143233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

131143233 is a deficient number, since it is larger than the sum of its proper divisors (57929343).

131143233 is a wasteful number, since it uses less digits than its factorization.

131143233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13664.

The product of its digits is 648, while the sum is 21.

The square root of 131143233 is about 11451.7785954846. The cubic root of 131143233 is about 508.0603409114.

Adding to 131143233 its reverse (332341131), we get a palindrome (463484364).

It can be divided in two parts, 1311 and 43233, that added together give a palindrome (44544).

The spelling of 131143233 in words is "one hundred thirty-one million, one hundred forty-three thousand, two hundred thirty-three".