102605131 has 2 divisors, whose sum is σ = 102605132. Its totient is φ = 102605130.

The previous prime is 102605123. The next prime is 102605137. The reversal of 102605131 is 131506201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102605131 - 2³ = 102605123 is a prime.

It is a super-2 number, since 2×102605131² = 21055625815054322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102605099 and 102605108.

It is not a weakly prime, because it can be changed into another prime (102605137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51302565 + 51302566.

It is an arithmetic number, because the mean of its divisors is an integer number (51302566).

Almost surely, 2^102605131 is an apocalyptic number.

102605131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102605131 is an equidigital number, since it uses as much as digits as its factorization.

102605131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 102605131 is about 10129.4190850216. The cubic root of 102605131 is about 468.1550290570.

The spelling of 102605131 in words is "one hundred two million, six hundred five thousand, one hundred thirty-one".