345031405 has 8 divisors (see below), whose sum is σ = 438392952. Its totient is φ = 259788288.

The previous prime is 345031399. The next prime is 345031411. The reversal of 345031405 is 504130543.

It is an interprime number because it is at equal distance from previous prime (345031399) and next prime (345031411).

It can be written as a sum of positive squares in 4 ways, for example, as 129117769 + 215913636 = 11363^2 + 14694^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 345031405 - 2¹¹ = 345029357 is a prime.

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 345031405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2029512 + ... + 2029681.

It is an arithmetic number, because the mean of its divisors is an integer number (54799119).

Almost surely, 2^345031405 is an apocalyptic number.

It is an amenable number.

345031405 is a deficient number, since it is larger than the sum of its proper divisors (93361547).

345031405 is a wasteful number, since it uses less digits than its factorization.

345031405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059215.

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

The square root of 345031405 is about 18575.0209959504. The cubic root of 345031405 is about 701.3791890039.

Adding to 345031405 its reverse (504130543), we get a palindrome (849161948).

The spelling of 345031405 in words is "three hundred forty-five million, thirty-one thousand, four hundred five".