21035232311 has 8 divisors (see below), whose sum is σ = 21806987904. Its totient is φ = 20269301760.

The previous prime is 21035232287. The next prime is 21035232343. The reversal of 21035232311 is 11323253012.

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-21035232311 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 (21035232391) 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, 1448906 + ... + 1463351.

It is an arithmetic number, because the mean of its divisors is an integer number (2725873488).

Almost surely, 2^21035232311 is an apocalyptic number.

21035232311 is a deficient number, since it is larger than the sum of its proper divisors (771755593).

21035232311 is a wasteful number, since it uses less digits than its factorization.

21035232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2912521.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 21035232311 its reverse (11323253012), we get a palindrome (32358485323).

The spelling of 21035232311 in words is "twenty-one billion, thirty-five million, two hundred thirty-two thousand, three hundred eleven".