34991531 has 2 divisors, whose sum is σ = 34991532. Its totient is φ = 34991530.

The previous prime is 34991527. The next prime is 34991609. The reversal of 34991531 is 13519943.

It is a weak prime.

It is an emirp because it is prime and its reverse (13519943) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34991531 - 2² = 34991527 is a prime.

It is a super-2 number, since 2×34991531² = 2448814483447922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 34991491 and 34991500.

It is not a weakly prime, because it can be changed into another prime (34991431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17495765 + 17495766.

It is an arithmetic number, because the mean of its divisors is an integer number (17495766).

Almost surely, 2^34991531 is an apocalyptic number.

34991531 is a deficient number, since it is larger than the sum of its proper divisors (1).

34991531 is an equidigital number, since it uses as much as digits as its factorization.

34991531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14580, while the sum is 35.

The square root of 34991531 is about 5915.3639786576. The cubic root of 34991531 is about 327.0802454043.

The spelling of 34991531 in words is "thirty-four million, nine hundred ninety-one thousand, five hundred thirty-one".