21310231002 has 32 divisors (see below), whose sum is σ = 42854719488. Its totient is φ = 7064432496.

The previous prime is 21310230967. The next prime is 21310231013. The reversal of 21310231002 is 20013201312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1414803 + ... + 1429785.

It is an arithmetic number, because the mean of its divisors is an integer number (1339209984).

Almost surely, 2^21310231002 is an apocalyptic number.

21310231002 is an abundant number, since it is smaller than the sum of its proper divisors (21544488486).

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

21310231002 is a wasteful number, since it uses less digits than its factorization.

21310231002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16274.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21310231002 its reverse (20013201312), we get a palindrome (41323432314).

The spelling of 21310231002 in words is "twenty-one billion, three hundred ten million, two hundred thirty-one thousand, two".