20313051 has 16 divisors (see below), whose sum is σ = 30049920. Its totient is φ = 12101120.

The previous prime is 20313047. The next prime is 20313067. The reversal of 20313051 is 15031302.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20313051 - 2² = 20313047 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20313051.

It is not an unprimeable number, because it can be changed into a prime (20313001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3270 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (1878120).

Almost surely, 2^20313051 is an apocalyptic number.

20313051 is a deficient number, since it is larger than the sum of its proper divisors (9736869).

20313051 is a wasteful number, since it uses less digits than its factorization.

20313051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10506.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20313051 is about 4507.0002218771. Note that the first 3 decimals coincide. The cubic root of 20313051 is about 272.8506878506.

Adding to 20313051 its reverse (15031302), we get a palindrome (35344353).

The spelling of 20313051 in words is "twenty million, three hundred thirteen thousand, fifty-one".