102549131 has 2 divisors, whose sum is σ = 102549132. Its totient is φ = 102549130.

The previous prime is 102549119. The next prime is 102549143. The reversal of 102549131 is 131945201.

It is a balanced prime because it is at equal distance from previous prime (102549119) and next prime (102549143).

It is an emirp because it is prime and its reverse (131945201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102549131 - 2²⁶ = 35440267 is a prime.

It is a super-2 number, since 2×102549131² = 21032648537710322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102549131.

It is not a weakly prime, because it can be changed into another prime (102549431) 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, 51274565 + 51274566.

It is an arithmetic number, because the mean of its divisors is an integer number (51274566).

Almost surely, 2^102549131 is an apocalyptic number.

102549131 is a deficient number, since it is larger than the sum of its proper divisors (1).

102549131 is an equidigital number, since it uses as much as digits as its factorization.

102549131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 102549131 is about 10126.6544821081. The cubic root of 102549131 is about 468.0698434126.

The spelling of 102549131 in words is "one hundred two million, five hundred forty-nine thousand, one hundred thirty-one".