102645131 has 2 divisors, whose sum is σ = 102645132. Its totient is φ = 102645130.

The previous prime is 102645091. The next prime is 102645157. The reversal of 102645131 is 131546201.

It is a strong prime.

It is an emirp because it is prime and its reverse (131546201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102645131 is a prime.

It is a super-2 number, since 2×102645131² = 21072045836014322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102645097 and 102645106.

It is not a weakly prime, because it can be changed into another prime (102645331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51322565 + 51322566.

It is an arithmetic number, because the mean of its divisors is an integer number (51322566).

Almost surely, 2^102645131 is an apocalyptic number.

102645131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102645131 is an equidigital number, since it uses as much as digits as its factorization.

102645131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 102645131 is about 10131.3933395165. The cubic root of 102645131 is about 468.2158569710.

The spelling of 102645131 in words is "one hundred two million, six hundred forty-five thousand, one hundred thirty-one".