21313500311 has 8 divisors (see below), whose sum is σ = 22026561984. Its totient is φ = 20609639680.

The previous prime is 21313500301. The next prime is 21313500317. The reversal of 21313500311 is 11300531312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21313500311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313500317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295551 + ... + 2304816.

It is an arithmetic number, because the mean of its divisors is an integer number (2753320248).

Almost surely, 2^21313500311 is an apocalyptic number.

21313500311 is a deficient number, since it is larger than the sum of its proper divisors (713061673).

21313500311 is a wasteful number, since it uses less digits than its factorization.

21313500311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4600521.

The product of its (nonzero) digits is 270, while the sum is 20.

The spelling of 21313500311 in words is "twenty-one billion, three hundred thirteen million, five hundred thousand, three hundred eleven".