101001331 has 2 divisors, whose sum is σ = 101001332. Its totient is φ = 101001330.

The previous prime is 101001217. The next prime is 101001343. The reversal of 101001331 is 133100101.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101001331 is a prime.

It is a super-2 number, since 2×101001331² = 20402537727543122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101001371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50500665 + 50500666.

It is an arithmetic number, because the mean of its divisors is an integer number (50500666).

Almost surely, 2^101001331 is an apocalyptic number.

101001331 is a deficient number, since it is larger than the sum of its proper divisors (1).

101001331 is an equidigital number, since it uses as much as digits as its factorization.

101001331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9, while the sum is 10.

The square root of 101001331 is about 10049.9418406277. The cubic root of 101001331 is about 465.7029964743.

Adding to 101001331 its reverse (133100101), we get a palindrome (234101432).

The spelling of 101001331 in words is "one hundred one million, one thousand, three hundred thirty-one".