34931561 has 6 divisors (see below), whose sum is σ = 40634730. Its totient is φ = 29941296.

The previous prime is 34931537. The next prime is 34931563. The reversal of 34931561 is 16513943.

It can be written as a sum of positive squares in only one way, i.e., 31990336 + 2941225 = 5656^2 + 1715^2 .

It is not a de Polignac number, because 34931561 - 2²² = 30737257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34931563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 356396 + ... + 356493.

It is an arithmetic number, because the mean of its divisors is an integer number (6772455).

Almost surely, 2^34931561 is an apocalyptic number.

It is an amenable number.

34931561 is a deficient number, since it is larger than the sum of its proper divisors (5703169).

34931561 is an equidigital number, since it uses as much as digits as its factorization.

34931561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712903 (or 712896 counting only the distinct ones).

The product of its digits is 9720, while the sum is 32.

The square root of 34931561 is about 5910.2928015455. The cubic root of 34931561 is about 326.8932837966.

The spelling of 34931561 in words is "thirty-four million, nine hundred thirty-one thousand, five hundred sixty-one".