20431002143210 has 16 divisors (see below), whose sum is σ = 36791513341992. Its totient is φ = 8168909860800.

The previous prime is 20431002143191. The next prime is 20431002143239. The reversal of 20431002143210 is 1234120013402.

It can be written as a sum of positive squares in 4 ways, for example, as 16749481167769 + 3681520975441 = 4092613^2 + 1918729^2 .

It is a super-2 number, since 2×20431002143210² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

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, 436349981 + ... + 436396800.

Almost surely, 2^{20431002143210} is an apocalyptic number.

20431002143210 is a deficient number, since it is larger than the sum of its proper divisors (16360511198782).

20431002143210 is a wasteful number, since it uses less digits than its factorization.

20431002143210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 872749129.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20431002143210 its reverse (1234120013402), we get a palindrome (21665122156612).

The spelling of 20431002143210 in words is "twenty trillion, four hundred thirty-one billion, two million, one hundred forty-three thousand, two hundred ten".