21313033110 has 48 divisors (see below), whose sum is σ = 58673530656. Its totient is φ = 5349153024.

The previous prime is 21313033109. The next prime is 21313033111. The reversal of 21313033110 is 1133031312.

It is a happy number.

21313033110 is a `hidden beast` number, since 21 + 31 + 303 + 311 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (21313033109) and next prime (21313033111).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21313033111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6963514 + ... + 6966573.

It is an arithmetic number, because the mean of its divisors is an integer number (1222365222).

Almost surely, 2^21313033110 is an apocalyptic number.

21313033110 is an abundant number, since it is smaller than the sum of its proper divisors (37360497546).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21313033110 is a wasteful number, since it uses less digits than its factorization.

21313033110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930117 (or 13930114 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 21313033110 its reverse (1133031312), we get a palindrome (22446064422).

The spelling of 21313033110 in words is "twenty-one billion, three hundred thirteen million, thirty-three thousand, one hundred ten".