21313311323030 has 32 divisors (see below), whose sum is σ = 38826671756544. Its totient is φ = 8422502398816.

The previous prime is 21313311323027. The next prime is 21313311323071. The reversal of 21313311323030 is 3032311331312.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108056279 + ... + 108253341.

It is an arithmetic number, because the mean of its divisors is an integer number (1213333492392).

Almost surely, 2^{21313311323030} is an apocalyptic number.

21313311323030 is a deficient number, since it is larger than the sum of its proper divisors (17513360433514).

21313311323030 is a wasteful number, since it uses less digits than its factorization.

21313311323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327460.

The product of its (nonzero) digits is 2916, while the sum is 26.

Adding to 21313311323030 its reverse (3032311331312), we get a palindrome (24345622654342).

The spelling of 21313311323030 in words is "twenty-one trillion, three hundred thirteen billion, three hundred eleven million, three hundred twenty-three thousand, thirty".