320351255 has 16 divisors (see below), whose sum is σ = 454489920. Its totient is φ = 212093952.

The previous prime is 320351249. The next prime is 320351263. The reversal of 320351255 is 552153023.

320351255 = T₂₃₁ + T₂₃₂ + ... + T₁₂₄₅.

It is not a de Polignac number, because 320351255 - 2²⁶ = 253242391 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156794 + ... + 158823.

It is an arithmetic number, because the mean of its divisors is an integer number (28405620).

Almost surely, 2^320351255 is an apocalyptic number.

320351255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

320351255 is a deficient number, since it is larger than the sum of its proper divisors (134138665).

320351255 is a wasteful number, since it uses less digits than its factorization.

320351255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315658.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 320351255 is about 17898.3590029924. The cubic root of 320351255 is about 684.2405528238.

The spelling of 320351255 in words is "three hundred twenty million, three hundred fifty-one thousand, two hundred fifty-five".