997351741 has 2 divisors, whose sum is σ = 997351742. Its totient is φ = 997351740.

The previous prime is 997351739. The next prime is 997351757. The reversal of 997351741 is 147153799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939667716 + 57684025 = 30654^2 + 7595^2 .

It is a cyclic number.

It is not a de Polignac number, because 997351741 - 2¹ = 997351739 is a prime.

Together with 997351739, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 997351691 and 997351700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997351841) 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 as a sum of consecutive naturals, namely, 498675870 + 498675871.

It is an arithmetic number, because the mean of its divisors is an integer number (498675871).

Almost surely, 2^997351741 is an apocalyptic number.

It is an amenable number.

997351741 is a deficient number, since it is larger than the sum of its proper divisors (1).

997351741 is an equidigital number, since it uses as much as digits as its factorization.

997351741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 238140, while the sum is 46.

The square root of 997351741 is about 31580.8761911382. The cubic root of 997351741 is about 999.1164665986.

The spelling of 997351741 in words is "nine hundred ninety-seven million, three hundred fifty-one thousand, seven hundred forty-one".