101013281 has 2 divisors, whose sum is σ = 101013282. Its totient is φ = 101013280.

The previous prime is 101013277. The next prime is 101013307. The reversal of 101013281 is 182310101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100500625 + 512656 = 10025^2 + 716^2 .

It is a cyclic number.

It is not a de Polignac number, because 101013281 - 2² = 101013277 is a prime.

It is a super-2 number, since 2×101013281² = 20407365876769922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101013581) 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, 50506640 + 50506641.

It is an arithmetic number, because the mean of its divisors is an integer number (50506641).

Almost surely, 2^101013281 is an apocalyptic number.

It is an amenable number.

101013281 is a deficient number, since it is larger than the sum of its proper divisors (1).

101013281 is an equidigital number, since it uses as much as digits as its factorization.

101013281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 101013281 is about 10050.5363538470. The cubic root of 101013281 is about 465.7213623423.

Adding to 101013281 its reverse (182310101), we get a palindrome (283323382).

The spelling of 101013281 in words is "one hundred one million, thirteen thousand, two hundred eighty-one".