20312834 has 12 divisors (see below), whose sum is σ = 30969666. Its totient is φ = 9990432.

The previous prime is 20312827. The next prime is 20312837. The reversal of 20312834 is 43821302.

It can be written as a sum of positive squares in 3 ways, for example, as 18361225 + 1951609 = 4285^2 + 1397^2 .

It is a super-2 number, since 2×20312834² = 825222450223112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20312837) 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, 54272 + ... + 54644.

Almost surely, 2^20312834 is an apocalyptic number.

20312834 is a deficient number, since it is larger than the sum of its proper divisors (10656832).

20312834 is an frugal number, since it uses more digits than its factorization.

20312834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 20312834 is about 4506.9761481508. The cubic root of 20312834 is about 272.8497162452.

The spelling of 20312834 in words is "twenty million, three hundred twelve thousand, eight hundred thirty-four".