147018731 has 8 divisors (see below), whose sum is σ = 148879200. Its totient is φ = 145166400.

The previous prime is 147018727. The next prime is 147018733. The reversal of 147018731 is 137810741.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 147018731 - 2² = 147018727 is a prime.

It is a super-2 number, since 2×147018731² = 43229014529700722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (147018733) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39530 + ... + 43088.

It is an arithmetic number, because the mean of its divisors is an integer number (18609900).

Almost surely, 2^147018731 is an apocalyptic number.

147018731 is a deficient number, since it is larger than the sum of its proper divisors (1860469).

147018731 is a wasteful number, since it uses less digits than its factorization.

147018731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 147018731 is about 12125.1280817977. The cubic root of 147018731 is about 527.7856240122.

It can be divided in two parts, 14701 and 8731, that added together give a palindrome (23432).

The spelling of 147018731 in words is "one hundred forty-seven million, eighteen thousand, seven hundred thirty-one".