20010232511231 has 2 divisors, whose sum is σ = 20010232511232. Its totient is φ = 20010232511230.

The previous prime is 20010232511153. The next prime is 20010232511239. The reversal of 20010232511231 is 13211523201002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20010232511231 is a prime.

It is a super-2 number, since 2×20010232511231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20010232511197 and 20010232511206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20010232511239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005116255615 + 10005116255616.

It is an arithmetic number, because the mean of its divisors is an integer number (10005116255616).

Almost surely, 2^{20010232511231} is an apocalyptic number.

20010232511231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010232511231 is an equidigital number, since it uses as much as digits as its factorization.

20010232511231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 20010232511231 its reverse (13211523201002), we get a palindrome (33221755712233).

The spelling of 20010232511231 in words is "twenty trillion, ten billion, two hundred thirty-two million, five hundred eleven thousand, two hundred thirty-one".