21014331030 has 192 divisors, whose sum is σ = 69237282816. Its totient is φ = 4294944000.

The previous prime is 21014331029. The next prime is 21014331043. The reversal of 21014331030 is 3013341012.

21014331030 is a `hidden beast` number, since 210 + 143 + 310 + 3 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 21014330994 and 21014331012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 397875 + ... + 447585.

It is an arithmetic number, because the mean of its divisors is an integer number (360610848).

Almost surely, 2^21014331030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21014331030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34618641408).

21014331030 is an abundant number, since it is smaller than the sum of its proper divisors (48222951786).

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

21014331030 is a wasteful number, since it uses less digits than its factorization.

21014331030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49803 (or 49800 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 21014331030 its reverse (3013341012), we get a palindrome (24027672042).

The spelling of 21014331030 in words is "twenty-one billion, fourteen million, three hundred thirty-one thousand, thirty".