21320031410 has 32 divisors (see below), whose sum is σ = 38787092352. Its totient is φ = 8436887680.

The previous prime is 21320031409. The next prime is 21320031431. The reversal of 21320031410 is 1413002312.

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, 801179 + ... + 827361.

It is an arithmetic number, because the mean of its divisors is an integer number (1212096636).

Almost surely, 2^21320031410 is an apocalyptic number.

21320031410 is a deficient number, since it is larger than the sum of its proper divisors (17467060942).

21320031410 is a wasteful number, since it uses less digits than its factorization.

21320031410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27058.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21320031410 its reverse (1413002312), we get a palindrome (22733033722).

The spelling of 21320031410 in words is "twenty-one billion, three hundred twenty million, thirty-one thousand, four hundred ten".