20134102321 has 4 divisors (see below), whose sum is σ = 20149796592. Its totient is φ = 20118408052.

The previous prime is 20134102283. The next prime is 20134102327. The reversal of 20134102321 is 12320143102.

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: 12320143102 = 2 ⋅6160071551.

It is a cyclic number.

It is not a de Polignac number, because 20134102321 - 2⁷ = 20134102193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20134102327) 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, 7845211 + ... + 7847776.

It is an arithmetic number, because the mean of its divisors is an integer number (5037449148).

Almost surely, 2^20134102321 is an apocalyptic number.

It is an amenable number.

20134102321 is a deficient number, since it is larger than the sum of its proper divisors (15694271).

20134102321 is a wasteful number, since it uses less digits than its factorization.

20134102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694270.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20134102321 its reverse (12320143102), we get a palindrome (32454245423).

The spelling of 20134102321 in words is "twenty billion, one hundred thirty-four million, one hundred two thousand, three hundred twenty-one".