6313132381 has 2 divisors, whose sum is σ = 6313132382. Its totient is φ = 6313132380.

The previous prime is 6313132369. The next prime is 6313132387. The reversal of 6313132381 is 1832313136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6278026756 + 35105625 = 79234^2 + 5925^2 .

It is a cyclic number.

It is not a de Polignac number, because 6313132381 - 2⁵ = 6313132349 is a prime.

It is a super-2 number, since 2×6313132381² = 79711280920061458322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6313132387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3156566190 + 3156566191.

It is an arithmetic number, because the mean of its divisors is an integer number (3156566191).

Almost surely, 2^6313132381 is an apocalyptic number.

It is an amenable number.

6313132381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6313132381 is an equidigital number, since it uses as much as digits as its factorization.

6313132381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 6313132381 is about 79455.2224904065. Note that the first 3 decimals coincide. The cubic root of 6313132381 is about 1848.1971607584.

The spelling of 6313132381 in words is "six billion, three hundred thirteen million, one hundred thirty-two thousand, three hundred eighty-one".