20130651 has 12 divisors (see below), whose sum is σ = 29136120. Its totient is φ = 13393440.

The previous prime is 20130647. The next prime is 20130653. The reversal of 20130651 is 15603102.

20130651 is a `hidden beast` number, since 2 + 0 + 13 + 0 + 651 = 666.

It is not a de Polignac number, because 20130651 - 2² = 20130647 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20130653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3156 + ... + 7086.

It is an arithmetic number, because the mean of its divisors is an integer number (2428010).

Almost surely, 2^20130651 is an apocalyptic number.

20130651 is a deficient number, since it is larger than the sum of its proper divisors (9005469).

20130651 is a wasteful number, since it uses less digits than its factorization.

20130651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4506 (or 4503 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20130651 is about 4486.7194028600. The cubic root of 20130651 is about 272.0315482078.

Adding to 20130651 its reverse (15603102), we get a palindrome (35733753).

The spelling of 20130651 in words is "twenty million, one hundred thirty thousand, six hundred fifty-one".