131033331 has 96 divisors (see below), whose sum is σ = 242004672. Its totient is φ = 67092480.

The previous prime is 131033327. The next prime is 131033333. The reversal of 131033331 is 133330131.

It is not a de Polignac number, because 131033331 - 2² = 131033327 is a prime.

It is a super-2 number, since 2×131033331² = 34339467665911122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131033333) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1159531 + ... + 1159643.

It is an arithmetic number, because the mean of its divisors is an integer number (2520882).

Almost surely, 2^131033331 is an apocalyptic number.

131033331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

131033331 is a deficient number, since it is larger than the sum of its proper divisors (110971341).

131033331 is a wasteful number, since it uses less digits than its factorization.

131033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 243, while the sum is 18.

The square root of 131033331 is about 11446.9791211481. The cubic root of 131033331 is about 507.9183779313.

Adding to 131033331 its reverse (133330131), we get a palindrome (264363462).

The spelling of 131033331 in words is "one hundred thirty-one million, thirty-three thousand, three hundred thirty-one".