2123134397 has 2 divisors, whose sum is σ = 2123134398. Its totient is φ = 2123134396.

The previous prime is 2123134361. The next prime is 2123134441. The reversal of 2123134397 is 7934313212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1703130361 + 420004036 = 41269^2 + 20494^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123134397 - 2¹⁰ = 2123133373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2123134357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061567198 + 1061567199.

It is an arithmetic number, because the mean of its divisors is an integer number (1061567199).

Almost surely, 2^2123134397 is an apocalyptic number.

It is an amenable number.

2123134397 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123134397 is an equidigital number, since it uses as much as digits as its factorization.

2123134397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 2123134397 is about 46077.4825375693. The cubic root of 2123134397 is about 1285.2644506120.

The spelling of 2123134397 in words is "two billion, one hundred twenty-three million, one hundred thirty-four thousand, three hundred ninety-seven".