1348631387 has 2 divisors, whose sum is σ = 1348631388. Its totient is φ = 1348631386.

The previous prime is 1348631377. The next prime is 1348631423. The reversal of 1348631387 is 7831368431.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1348631387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1348631377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674315693 + 674315694.

It is an arithmetic number, because the mean of its divisors is an integer number (674315694).

Almost surely, 2^1348631387 is an apocalyptic number.

1348631387 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348631387 is an equidigital number, since it uses as much as digits as its factorization.

1348631387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 44.

The square root of 1348631387 is about 36723.7169551232. The cubic root of 1348631387 is about 1104.8358408362.

The spelling of 1348631387 in words is "one billion, three hundred forty-eight million, six hundred thirty-one thousand, three hundred eighty-seven".