1331247147 has 16 divisors (see below), whose sum is σ = 1793556480. Its totient is φ = 878254272.

The previous prime is 1331247133. The next prime is 1331247263. The reversal of 1331247147 is 7417421331.

1331247147 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1331247147 - 2¹⁰ = 1331246123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1331247647) 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, 151558 + ... + 160100.

It is an arithmetic number, because the mean of its divisors is an integer number (112097280).

Almost surely, 2^1331247147 is an apocalyptic number.

1331247147 is a deficient number, since it is larger than the sum of its proper divisors (462309333).

1331247147 is a wasteful number, since it uses less digits than its factorization.

1331247147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9082.

The product of its digits is 14112, while the sum is 33.

The square root of 1331247147 is about 36486.2597014273. The cubic root of 1331247147 is about 1100.0680803593.

Adding to 1331247147 its reverse (7417421331), we get a palindrome (8748668478).

The spelling of 1331247147 in words is "one billion, three hundred thirty-one million, two hundred forty-seven thousand, one hundred forty-seven".