1371342161 has 4 divisors (see below), whose sum is σ = 1567248192. Its totient is φ = 1175436132.

The previous prime is 1371342139. The next prime is 1371342163. The reversal of 1371342161 is 1612431731.

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: 1612431731 = 103 ⋅15654677.

It is a cyclic number.

It is not a de Polignac number, because 1371342161 - 2¹⁸ = 1371080017 is a prime.

It is a super-2 number, since 2×1371342161² = 3761158645072299842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1371342163) 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, 97953005 + ... + 97953018.

It is an arithmetic number, because the mean of its divisors is an integer number (391812048).

Almost surely, 2^1371342161 is an apocalyptic number.

It is an amenable number.

1371342161 is a deficient number, since it is larger than the sum of its proper divisors (195906031).

1371342161 is an equidigital number, since it uses as much as digits as its factorization.

1371342161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195906030.

The product of its digits is 3024, while the sum is 29.

The square root of 1371342161 is about 37031.6372983966. The cubic root of 1371342161 is about 1111.0031137140.

Adding to 1371342161 its reverse (1612431731), we get a palindrome (2983773892).

The spelling of 1371342161 in words is "one billion, three hundred seventy-one million, three hundred forty-two thousand, one hundred sixty-one".