2057434723 has 4 divisors (see below), whose sum is σ = 2057821200. Its totient is φ = 2057048248.

The previous prime is 2057434711. The next prime is 2057434739. The reversal of 2057434723 is 3274347502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3274347502 = 2 ⋅1637173751.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2057434723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2057434523) 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, 185140 + ... + 195937.

It is an arithmetic number, because the mean of its divisors is an integer number (514455300).

Almost surely, 2^2057434723 is an apocalyptic number.

2057434723 is a deficient number, since it is larger than the sum of its proper divisors (386477).

2057434723 is an equidigital number, since it uses as much as digits as its factorization.

2057434723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386476.

The product of its (nonzero) digits is 141120, while the sum is 37.

The square root of 2057434723 is about 45358.9541656331. The cubic root of 2057434723 is about 1271.8679444000.

The spelling of 2057434723 in words is "two billion, fifty-seven million, four hundred thirty-four thousand, seven hundred twenty-three".