828531427349 has 2 divisors, whose sum is σ = 828531427350. Its totient is φ = 828531427348.

The previous prime is 828531427309. The next prime is 828531427357. The reversal of 828531427349 is 943724135828.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 828067240324 + 464187025 = 909982^2 + 21545^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-828531427349 is a prime.

It is a super-2 number, since 2×828531427349² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 828531427294 and 828531427303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (828531427309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 414265713674 + 414265713675.

It is an arithmetic number, because the mean of its divisors is an integer number (414265713675).

Almost surely, 2^828531427349 is an apocalyptic number.

It is an amenable number.

828531427349 is a deficient number, since it is larger than the sum of its proper divisors (1).

828531427349 is an equidigital number, since it uses as much as digits as its factorization.

828531427349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 56.

The spelling of 828531427349 in words is "eight hundred twenty-eight billion, five hundred thirty-one million, four hundred twenty-seven thousand, three hundred forty-nine".