320153155 has 16 divisors (see below), whose sum is σ = 439487424. Its totient is φ = 219323520.

The previous prime is 320153153. The next prime is 320153159. The reversal of 320153155 is 551351023.

It is not a de Polignac number, because 320153155 - 2¹ = 320153153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320153153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38685 + ... + 46225.

It is an arithmetic number, because the mean of its divisors is an integer number (27467964).

Almost surely, 2^320153155 is an apocalyptic number.

320153155 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

320153155 is a deficient number, since it is larger than the sum of its proper divisors (119334269).

320153155 is a wasteful number, since it uses less digits than its factorization.

320153155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8766.

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 320153155 is about 17892.8241203003. The cubic root of 320153155 is about 684.0994826690.

The spelling of 320153155 in words is "three hundred twenty million, one hundred fifty-three thousand, one hundred fifty-five".