344520413 has 4 divisors (see below), whose sum is σ = 344797500. Its totient is φ = 344243328.

The previous prime is 344520409. The next prime is 344520433. The reversal of 344520413 is 314025443.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314025443 = 31 ⋅10129853.

It can be written as a sum of positive squares in 2 ways, for example, as 76772644 + 267747769 = 8762^2 + 16363^2 .

It is a cyclic number.

It is not a de Polignac number, because 344520413 - 2² = 344520409 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 (344520433) 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, 136670 + ... + 139167.

It is an arithmetic number, because the mean of its divisors is an integer number (86199375).

Almost surely, 2^344520413 is an apocalyptic number.

It is an amenable number.

344520413 is a deficient number, since it is larger than the sum of its proper divisors (277087).

344520413 is a wasteful number, since it uses less digits than its factorization.

344520413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277086.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 344520413 is about 18561.2610832346. The cubic root of 344520413 is about 701.0327700741.

Adding to 344520413 its reverse (314025443), we get a palindrome (658545856).

The spelling of 344520413 in words is "three hundred forty-four million, five hundred twenty thousand, four hundred thirteen".