147931 has 6 divisors (see below), whose sum is σ = 172140. Its totient is φ = 126756.

The previous prime is 147919. The next prime is 147937. The reversal of 147931 is 139741.

147931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 147931 - 2⁹ = 147419 is a prime.

It is a super-2 number, since 2×147931² = 43767161522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147896 and 147905.

It is not an unprimeable number, because it can be changed into a prime (147937) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1461 + ... + 1558.

It is an arithmetic number, because the mean of its divisors is an integer number (28690).

2¹⁴⁷⁹³¹ is an apocalyptic number.

147931 is a deficient number, since it is larger than the sum of its proper divisors (24209).

147931 is an equidigital number, since it uses as much as digits as its factorization.

147931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3033 (or 3026 counting only the distinct ones).

The product of its digits is 756, while the sum is 25.

The square root of 147931 is about 384.6179922989. The cubic root of 147931 is about 52.8875031676.

The spelling of 147931 in words is "one hundred forty-seven thousand, nine hundred thirty-one".