331001131 has 2 divisors, whose sum is σ = 331001132. Its totient is φ = 331001130.

The previous prime is 331001107. The next prime is 331001137. The reversal of 331001131 is 131100133.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331001131 - 2¹¹ = 330999083 is a prime.

It is a super-2 number, since 2×331001131² = 219123497446558322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (331001137) 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, 165500565 + 165500566.

It is an arithmetic number, because the mean of its divisors is an integer number (165500566).

Almost surely, 2^331001131 is an apocalyptic number.

331001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

331001131 is an equidigital number, since it uses as much as digits as its factorization.

331001131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 331001131 is about 18193.4364813248. The cubic root of 331001131 is about 691.7404295327.

Adding to 331001131 its reverse (131100133), we get a palindrome (462101264).

The spelling of 331001131 in words is "three hundred thirty-one million, one thousand, one hundred thirty-one".