147311985 has 16 divisors (see below), whose sum is σ = 242070336. Its totient is φ = 76442688.

The previous prime is 147311981. The next prime is 147312013. The reversal of 147311985 is 589113741.

It is not a de Polignac number, because 147311985 - 2² = 147311981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (147311981) 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, 132159 + ... + 133268.

It is an arithmetic number, because the mean of its divisors is an integer number (15129396).

Almost surely, 2^147311985 is an apocalyptic number.

147311985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147311985 is a deficient number, since it is larger than the sum of its proper divisors (94758351).

147311985 is a wasteful number, since it uses less digits than its factorization.

147311985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265472.

The product of its digits is 30240, while the sum is 39.

The square root of 147311985 is about 12137.2148782165. The cubic root of 147311985 is about 528.1363105079.

The spelling of 147311985 in words is "one hundred forty-seven million, three hundred eleven thousand, nine hundred eighty-five".