131133031 has 2 divisors, whose sum is σ = 131133032. Its totient is φ = 131133030.

The previous prime is 131133001. The next prime is 131133049. The reversal of 131133031 is 130331131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131133031 - 2²³ = 122744423 is a prime.

It is a super-2 number, since 2×131133031² = 34391743638493922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 131132996 and 131133014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131133001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65566515 + 65566516.

It is an arithmetic number, because the mean of its divisors is an integer number (65566516).

Almost surely, 2^131133031 is an apocalyptic number.

131133031 is a deficient number, since it is larger than the sum of its proper divisors (1).

131133031 is an equidigital number, since it uses as much as digits as its factorization.

131133031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 131133031 is about 11451.3331538297. Note that the first 3 decimals coincide. The cubic root of 131133031 is about 508.0471660900.

Adding to 131133031 its reverse (130331131), we get a palindrome (261464162).

The spelling of 131133031 in words is "one hundred thirty-one million, one hundred thirty-three thousand, thirty-one".