343609521253 has 4 divisors (see below), whose sum is σ = 343610710848. Its totient is φ = 343608331660.

The previous prime is 343609521197. The next prime is 343609521301. The reversal of 343609521253 is 352125906343.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 352125906343 = 6911 ⋅50951513.

It is a cyclic number.

It is not a de Polignac number, because 343609521253 - 2¹⁷ = 343609390181 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 (343609521653) 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, 146100 + ... + 841762.

It is an arithmetic number, because the mean of its divisors is an integer number (85902677712).

Almost surely, 2^343609521253 is an apocalyptic number.

It is an amenable number.

343609521253 is a deficient number, since it is larger than the sum of its proper divisors (1189595).

343609521253 is an equidigital number, since it uses as much as digits as its factorization.

343609521253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189594.

The product of its (nonzero) digits is 583200, while the sum is 43.

The spelling of 343609521253 in words is "three hundred forty-three billion, six hundred nine million, five hundred twenty-one thousand, two hundred fifty-three".