131145033 has 4 divisors (see below), whose sum is σ = 174860048. Its totient is φ = 87430020.

The previous prime is 131145029. The next prime is 131145041. The reversal of 131145033 is 330541131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 131145033 - 2² = 131145029 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131145043) 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, 21857503 + ... + 21857508.

It is an arithmetic number, because the mean of its divisors is an integer number (43715012).

Almost surely, 2^131145033 is an apocalyptic number.

It is an amenable number.

131145033 is a deficient number, since it is larger than the sum of its proper divisors (43715015).

131145033 is an equidigital number, since it uses as much as digits as its factorization.

131145033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43715014.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 131145033 is about 11451.8571856271. The cubic root of 131145033 is about 508.0626653532.

Adding to 131145033 its reverse (330541131), we get a palindrome (461686164).

The spelling of 131145033 in words is "one hundred thirty-one million, one hundred forty-five thousand, thirty-three".