20313442 has 8 divisors (see below), whose sum is σ = 30491100. Its totient is φ = 10149744.

The previous prime is 20313437. The next prime is 20313467. The reversal of 20313442 is 24431302.

It can be written as a sum of positive squares in 2 ways, for example, as 19793601 + 519841 = 4449^2 + 721^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1684 + ... + 6592.

Almost surely, 2^20313442 is an apocalyptic number.

20313442 is a deficient number, since it is larger than the sum of its proper divisors (10177658).

20313442 is a wasteful number, since it uses less digits than its factorization.

20313442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20313442 is about 4507.0435986354. The cubic root of 20313442 is about 272.8524385138.

Adding to 20313442 its reverse (24431302), we get a palindrome (44744744).

The spelling of 20313442 in words is "twenty million, three hundred thirteen thousand, four hundred forty-two".