102862381 has 2 divisors, whose sum is σ = 102862382. Its totient is φ = 102862380.

The previous prime is 102862369. The next prime is 102862411. The reversal of 102862381 is 183268201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102839881 + 22500 = 10141^2 + 150^2 .

It is an emirp because it is prime and its reverse (183268201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102862381 - 2⁵ = 102862349 is a prime.

It is a super-2 number, since 2×102862381² = 21161338849978322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102862301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51431190 + 51431191.

It is an arithmetic number, because the mean of its divisors is an integer number (51431191).

Almost surely, 2^102862381 is an apocalyptic number.

It is an amenable number.

102862381 is a deficient number, since it is larger than the sum of its proper divisors (1).

102862381 is an equidigital number, since it uses as much as digits as its factorization.

102862381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 102862381 is about 10142.1092973799. The cubic root of 102862381 is about 468.5459528859.

The spelling of 102862381 in words is "one hundred two million, eight hundred sixty-two thousand, three hundred eighty-one".