101228131 has 2 divisors, whose sum is σ = 101228132. Its totient is φ = 101228130.

The previous prime is 101228117. The next prime is 101228137. The reversal of 101228131 is 131822101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101228131 - 2²¹ = 99130979 is a prime.

It is a super-2 number, since 2×101228131² = 20494269011506322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 101228099 and 101228108.

It is not a weakly prime, because it can be changed into another prime (101228137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50614065 + 50614066.

It is an arithmetic number, because the mean of its divisors is an integer number (50614066).

Almost surely, 2^101228131 is an apocalyptic number.

101228131 is a deficient number, since it is larger than the sum of its proper divisors (1).

101228131 is an equidigital number, since it uses as much as digits as its factorization.

101228131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 101228131 is about 10061.2191607180. The cubic root of 101228131 is about 466.0513169002.

The spelling of 101228131 in words is "one hundred one million, two hundred twenty-eight thousand, one hundred thirty-one".