102481381 has 4 divisors (see below), whose sum is σ = 105787264. Its totient is φ = 99175500.

The previous prime is 102481361. The next prime is 102481397. The reversal of 102481381 is 183184201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183184201 = 109 ⋅1680589.

It is a cyclic number.

It is not a de Polignac number, because 102481381 - 2⁵ = 102481349 is a prime.

It is a super-2 number, since 2×102481381² = 21004866903334322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102481361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1652895 + ... + 1652956.

It is an arithmetic number, because the mean of its divisors is an integer number (26446816).

Almost surely, 2^102481381 is an apocalyptic number.

It is an amenable number.

102481381 is a deficient number, since it is larger than the sum of its proper divisors (3305883).

102481381 is an equidigital number, since it uses as much as digits as its factorization.

102481381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305882.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 102481381 is about 10123.3087970288. The cubic root of 102481381 is about 467.9667425292.

The spelling of 102481381 in words is "one hundred two million, four hundred eighty-one thousand, three hundred eighty-one".