1313831447 has 2 divisors, whose sum is σ = 1313831448. Its totient is φ = 1313831446.

The previous prime is 1313831423. The next prime is 1313831471. The reversal of 1313831447 is 7441383131.

It is a balanced prime because it is at equal distance from previous prime (1313831423) and next prime (1313831471).

It is a cyclic number.

It is not a de Polignac number, because 1313831447 - 2¹² = 1313827351 is a prime.

It is a super-2 number, since 2×1313831447² = 3452306142252227618, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313831947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656915723 + 656915724.

It is an arithmetic number, because the mean of its divisors is an integer number (656915724).

Almost surely, 2^1313831447 is an apocalyptic number.

1313831447 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313831447 is an equidigital number, since it uses as much as digits as its factorization.

1313831447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 1313831447 is about 36246.8129219660. The cubic root of 1313831447 is about 1095.2498882718.

The spelling of 1313831447 in words is "one billion, three hundred thirteen million, eight hundred thirty-one thousand, four hundred forty-seven".