971685353 has 2 divisors, whose sum is σ = 971685354. Its totient is φ = 971685352.

The previous prime is 971685349. The next prime is 971685383. The reversal of 971685353 is 353586179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 646532329 + 325153024 = 25427^2 + 18032^2 .

It is a cyclic number.

It is not a de Polignac number, because 971685353 - 2² = 971685349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 971685298 and 971685307.

It is not a weakly prime, because it can be changed into another prime (971685313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 485842676 + 485842677.

It is an arithmetic number, because the mean of its divisors is an integer number (485842677).

Almost surely, 2^971685353 is an apocalyptic number.

It is an amenable number.

971685353 is a deficient number, since it is larger than the sum of its proper divisors (1).

971685353 is an equidigital number, since it uses as much as digits as its factorization.

971685353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 47.

The square root of 971685353 is about 31171.8679741847. The cubic root of 971685353 is about 990.4712761469.

The spelling of 971685353 in words is "nine hundred seventy-one million, six hundred eighty-five thousand, three hundred fifty-three".