102711381 has 4 divisors (see below), whose sum is σ = 136948512. Its totient is φ = 68474252.

The previous prime is 102711379. The next prime is 102711383. The reversal of 102711381 is 183117201.

It is a happy number.

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: 183117201 = 3 ⋅61039067.

It is an interprime number because it is at equal distance from previous prime (102711379) and next prime (102711383).

It is a cyclic number.

It is not a de Polignac number, because 102711381 - 2¹ = 102711379 is a prime.

It is a super-2 number, since 2×102711381² = 21099255573854322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102711383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17118561 + ... + 17118566.

It is an arithmetic number, because the mean of its divisors is an integer number (34237128).

Almost surely, 2^102711381 is an apocalyptic number.

It is an amenable number.

102711381 is a deficient number, since it is larger than the sum of its proper divisors (34237131).

102711381 is an equidigital number, since it uses as much as digits as its factorization.

102711381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34237130.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 102711381 is about 10134.6623525404. The cubic root of 102711381 is about 468.3165684515.

Adding to 102711381 its reverse (183117201), we get a palindrome (285828582).

The spelling of 102711381 in words is "one hundred two million, seven hundred eleven thousand, three hundred eighty-one".