345503287 has 4 divisors (see below), whose sum is σ = 345542800. Its totient is φ = 345463776.

The previous prime is 345503281. The next prime is 345503293. The reversal of 345503287 is 782305543.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 782305543 = 41 ⋅19080623.

It is an interprime number because it is at equal distance from previous prime (345503281) and next prime (345503293).

It is a cyclic number.

It is not a de Polignac number, because 345503287 - 2¹⁵ = 345470519 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 (345503281) 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, 162 + ... + 26287.

It is an arithmetic number, because the mean of its divisors is an integer number (86385700).

Almost surely, 2^345503287 is an apocalyptic number.

345503287 is a deficient number, since it is larger than the sum of its proper divisors (39513).

345503287 is a wasteful number, since it uses less digits than its factorization.

345503287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39512.

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 345503287 is about 18587.7187142479. The cubic root of 345503287 is about 701.6987902937.

The spelling of 345503287 in words is "three hundred forty-five million, five hundred three thousand, two hundred eighty-seven".