34720531 has 2 divisors, whose sum is σ = 34720532. Its totient is φ = 34720530.

The previous prime is 34720523. The next prime is 34720549. The reversal of 34720531 is 13502743.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34720531 - 2³ = 34720523 is a prime.

It is a super-2 number, since 2×34720531² = 2411030545843922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34720496 and 34720505.

It is not a weakly prime, because it can be changed into another prime (34720561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17360265 + 17360266.

It is an arithmetic number, because the mean of its divisors is an integer number (17360266).

Almost surely, 2^34720531 is an apocalyptic number.

34720531 is a deficient number, since it is larger than the sum of its proper divisors (1).

34720531 is an equidigital number, since it uses as much as digits as its factorization.

34720531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 34720531 is about 5892.4130031762. The cubic root of 34720531 is about 326.2336732825.

The spelling of 34720531 in words is "thirty-four million, seven hundred twenty thousand, five hundred thirty-one".