345130405 has 4 divisors (see below), whose sum is σ = 414156492. Its totient is φ = 276104320.

The previous prime is 345130399. The next prime is 345130411. The reversal of 345130405 is 504031543.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 504031543 = 373 ⋅1351291.

It is an interprime number because it is at equal distance from previous prime (345130399) and next prime (345130411).

It can be written as a sum of positive squares in 2 ways, for example, as 229159044 + 115971361 = 15138^2 + 10769^2 .

It is not a de Polignac number, because 345130405 - 2³ = 345130397 is a prime.

It is a super-3 number, since 3×345130405³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 345130405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34513036 + ... + 34513045.

It is an arithmetic number, because the mean of its divisors is an integer number (103539123).

Almost surely, 2^345130405 is an apocalyptic number.

It is an amenable number.

345130405 is a deficient number, since it is larger than the sum of its proper divisors (69026087).

345130405 is an equidigital number, since it uses as much as digits as its factorization.

345130405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69026086.

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

The square root of 345130405 is about 18577.6856739477. The cubic root of 345130405 is about 701.4462649266.

Adding to 345130405 its reverse (504031543), we get a palindrome (849161948).

It can be divided in two parts, 3451 and 30405, that added together give a square (33856 = 184²).

The spelling of 345130405 in words is "three hundred forty-five million, one hundred thirty thousand, four hundred five".