340145053 has 4 divisors (see below), whose sum is σ = 342311740. Its totient is φ = 337978368.

The previous prime is 340145017. The next prime is 340145123. The reversal of 340145053 is 350541043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350541043 = 2789 ⋅125687.

It can be written as a sum of positive squares in 2 ways, for example, as 144648729 + 195496324 = 12027^2 + 13982^2 .

It is a cyclic number.

It is not a de Polignac number, because 340145053 - 2¹⁷ = 340013981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340145753) 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, 1083108 + ... + 1083421.

It is an arithmetic number, because the mean of its divisors is an integer number (85577935).

Almost surely, 2^340145053 is an apocalyptic number.

It is an amenable number.

340145053 is a deficient number, since it is larger than the sum of its proper divisors (2166687).

340145053 is a wasteful number, since it uses less digits than its factorization.

340145053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2166686.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 340145053 is about 18443.0217968748. The cubic root of 340145053 is about 698.0524456834.

Adding to 340145053 its reverse (350541043), we get a palindrome (690686096).

The spelling of 340145053 in words is "three hundred forty million, one hundred forty-five thousand, fifty-three".