1347661231 has 16 divisors (see below), whose sum is σ = 1550039040. Its totient is φ = 1147773600.

The previous prime is 1347661207. The next prime is 1347661243. The reversal of 1347661231 is 1321667431.

It is a cyclic number.

It is not a de Polignac number, because 1347661231 - 2⁵ = 1347661199 is a prime.

It is a super-2 number, since 2×1347661231² = 3632381587080870722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1347661201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 928056 + ... + 929506.

It is an arithmetic number, because the mean of its divisors is an integer number (96877440).

Almost surely, 2^1347661231 is an apocalyptic number.

1347661231 is a deficient number, since it is larger than the sum of its proper divisors (202377809).

1347661231 is a wasteful number, since it uses less digits than its factorization.

1347661231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2214.

The product of its digits is 18144, while the sum is 34.

The square root of 1347661231 is about 36710.5057306488. The cubic root of 1347661231 is about 1104.5708511455.

The spelling of 1347661231 in words is "one billion, three hundred forty-seven million, six hundred sixty-one thousand, two hundred thirty-one".