345431225 has 6 divisors (see below), whose sum is σ = 428334750. Its totient is φ = 276344960.

The previous prime is 345431183. The next prime is 345431231. The reversal of 345431225 is 522134543.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 19123129 + 326308096 = 4373^2 + 18064^2 .

It is not a de Polignac number, because 345431225 - 2¹⁴ = 345414841 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6908600 + ... + 6908649.

It is an arithmetic number, because the mean of its divisors is an integer number (71389125).

Almost surely, 2^345431225 is an apocalyptic number.

It is an amenable number.

345431225 is a deficient number, since it is larger than the sum of its proper divisors (82903525).

345431225 is a wasteful number, since it uses less digits than its factorization.

345431225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13817259 (or 13817254 counting only the distinct ones).

The product of its digits is 14400, while the sum is 29.

The square root of 345431225 is about 18585.7801827096. The cubic root of 345431225 is about 701.6500022058.

Adding to 345431225 its reverse (522134543), we get a palindrome (867565768).

It can be divided in two parts, 345 and 431225, that multiplied together give a triangular number (148772625 = T₁₇₂₄₉).

The spelling of 345431225 in words is "three hundred forty-five million, four hundred thirty-one thousand, two hundred twenty-five".