100001131 has 2 divisors, whose sum is σ = 100001132. Its totient is φ = 100001130.

The previous prime is 100001119. The next prime is 100001147. The reversal of 100001131 is 131100001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100001131 - 2¹³ = 99992939 is a prime.

It is a super-2 number, since 2×100001131² = 20000452402558322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100001431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000565 + 50000566.

It is an arithmetic number, because the mean of its divisors is an integer number (50000566).

Almost surely, 2^100001131 is an apocalyptic number.

100001131 is a deficient number, since it is larger than the sum of its proper divisors (1).

100001131 is an equidigital number, since it uses as much as digits as its factorization.

100001131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3, while the sum is 7.

The square root of 100001131 is about 10000.0565498401. The cubic root of 100001131 is about 464.1606332337.

Adding to 100001131 its reverse (131100001), we get a palindrome (231101132).

It can be divided in two parts, 100001 and 131, that multiplied together give a palindrome (13100131).

The spelling of 100001131 in words is "one hundred million, one thousand, one hundred thirty-one".