344257653 has 4 divisors (see below), whose sum is σ = 459010208. Its totient is φ = 229505100.

The previous prime is 344257619. The next prime is 344257663. The reversal of 344257653 is 356752443.

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.

It is not a de Polignac number, because 344257653 - 2¹⁴ = 344241269 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 (344257603) 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, 57376273 + ... + 57376278.

It is an arithmetic number, because the mean of its divisors is an integer number (114752552).

Almost surely, 2^344257653 is an apocalyptic number.

It is an amenable number.

344257653 is a deficient number, since it is larger than the sum of its proper divisors (114752555).

344257653 is a wasteful number, since it uses less digits than its factorization.

344257653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114752554.

The product of its digits is 302400, while the sum is 39.

The square root of 344257653 is about 18554.1815502598. The cubic root of 344257653 is about 700.8545027270.

The spelling of 344257653 in words is "three hundred forty-four million, two hundred fifty-seven thousand, six hundred fifty-three".