21130030311 has 32 divisors (see below), whose sum is σ = 31985737728. Its totient is φ = 12315870720.

The previous prime is 21130030309. The next prime is 21130030351. The reversal of 21130030311 is 11303003112.

It is not a de Polignac number, because 21130030311 - 2¹ = 21130030309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130030351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129106 + ... + 242751.

It is an arithmetic number, because the mean of its divisors is an integer number (999554304).

Almost surely, 2^21130030311 is an apocalyptic number.

21130030311 is a deficient number, since it is larger than the sum of its proper divisors (10855707417).

21130030311 is a wasteful number, since it uses less digits than its factorization.

21130030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371951.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21130030311 its reverse (11303003112), we get a palindrome (32433033423).

The spelling of 21130030311 in words is "twenty-one billion, one hundred thirty million, thirty thousand, three hundred eleven".