20312231321210 has 16 divisors (see below), whose sum is σ = 37251865744776. Its totient is φ = 7971592669248.

The previous prime is 20312231321143. The next prime is 20312231321251. The reversal of 20312231321210 is 1212313221302.

It can be written as a sum of positive squares in 4 ways, for example, as 18873524630689 + 1438706690521 = 4344367^2 + 1199461^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19162481849 + ... + 19162482908.

Almost surely, 2^{20312231321210} is an apocalyptic number.

20312231321210 is a deficient number, since it is larger than the sum of its proper divisors (16939634423566).

20312231321210 is a wasteful number, since it uses less digits than its factorization.

20312231321210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38324964817.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 20312231321210 its reverse (1212313221302), we get a palindrome (21524544542512).

The spelling of 20312231321210 in words is "twenty trillion, three hundred twelve billion, two hundred thirty-one million, three hundred twenty-one thousand, two hundred ten".