20313542 has 4 divisors (see below), whose sum is σ = 30470316. Its totient is φ = 10156770.

The previous prime is 20313511. The next prime is 20313563. The reversal of 20313542 is 24531302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078384 + ... + 5078387.

It is an arithmetic number, because the mean of its divisors is an integer number (7617579).

Almost surely, 2^20313542 is an apocalyptic number.

20313542 is a deficient number, since it is larger than the sum of its proper divisors (10156774).

20313542 is a wasteful number, since it uses less digits than its factorization.

20313542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10156773.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20313542 is about 4507.0546923684. The cubic root of 20313542 is about 272.8528862502.

Adding to 20313542 its reverse (24531302), we get a palindrome (44844844).

The spelling of 20313542 in words is "twenty million, three hundred thirteen thousand, five hundred forty-two".