34257631 has 2 divisors, whose sum is σ = 34257632. Its totient is φ = 34257630.

The previous prime is 34257623. The next prime is 34257637. The reversal of 34257631 is 13675243.

It is a strong prime.

It is an emirp because it is prime and its reverse (13675243) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34257631 - 2³ = 34257623 is a prime.

It is a super-2 number, since 2×34257631² = 2347170563464322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 34257593 and 34257602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34257637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17128815 + 17128816.

It is an arithmetic number, because the mean of its divisors is an integer number (17128816).

Almost surely, 2^34257631 is an apocalyptic number.

34257631 is a deficient number, since it is larger than the sum of its proper divisors (1).

34257631 is an equidigital number, since it uses as much as digits as its factorization.

34257631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 34257631 is about 5853.0018793778. The cubic root of 34257631 is about 324.7773812731. Note that the first 3 decimals are identical.

The spelling of 34257631 in words is "thirty-four million, two hundred fifty-seven thousand, six hundred thirty-one".