71341381 has 4 divisors (see below), whose sum is σ = 71472352. Its totient is φ = 71210412.

The previous prime is 71341379. The next prime is 71341393. The reversal of 71341381 is 18314317.

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: 18314317 = 7 ⋅2616331.

It is a cyclic number.

It is not a de Polignac number, because 71341381 - 2¹ = 71341379 is a prime.

It is a super-2 number, since 2×71341381² = 10179185285974322, 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 (71344381) 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, 64665 + ... + 65758.

It is an arithmetic number, because the mean of its divisors is an integer number (17868088).

Almost surely, 2^71341381 is an apocalyptic number.

It is an amenable number.

71341381 is a deficient number, since it is larger than the sum of its proper divisors (130971).

71341381 is a wasteful number, since it uses less digits than its factorization.

71341381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130970.

The product of its digits is 2016, while the sum is 28.

The square root of 71341381 is about 8446.3827168795. The cubic root of 71341381 is about 414.7443744383.

Adding to 71341381 its reverse (18314317), we get a palindrome (89655698).

It can be divided in two parts, 7134 and 1381, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 71341381 in words is "seventy-one million, three hundred forty-one thousand, three hundred eighty-one".