340351253 has 4 divisors (see below), whose sum is σ = 371292288. Its totient is φ = 309410220.

The previous prime is 340351183. The next prime is 340351259. The reversal of 340351253 is 352153043.

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: 352153043 = 11 ⋅32013913.

It is a cyclic number.

It is not a de Polignac number, because 340351253 - 2¹⁶ = 340285717 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 (340351259) 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, 15470501 + ... + 15470522.

It is an arithmetic number, because the mean of its divisors is an integer number (92823072).

Almost surely, 2^340351253 is an apocalyptic number.

It is an amenable number.

340351253 is a deficient number, since it is larger than the sum of its proper divisors (30941035).

340351253 is a wasteful number, since it uses less digits than its factorization.

340351253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30941034.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 340351253 is about 18448.6111401374. The cubic root of 340351253 is about 698.1934731040.

The spelling of 340351253 in words is "three hundred forty million, three hundred fifty-one thousand, two hundred fifty-three".