20101003231 has 2 divisors, whose sum is σ = 20101003232. Its totient is φ = 20101003230.

The previous prime is 20101003217. The next prime is 20101003253. The reversal of 20101003231 is 13230010102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20101003231 - 2⁷ = 20101003103 is a prime.

It is a super-2 number, since 2×20101003231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101003631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050501615 + 10050501616.

It is an arithmetic number, because the mean of its divisors is an integer number (10050501616).

Almost surely, 2^20101003231 is an apocalyptic number.

20101003231 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101003231 is an equidigital number, since it uses as much as digits as its factorization.

20101003231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20101003231 its reverse (13230010102), we get a palindrome (33331013333).

The spelling of 20101003231 in words is "twenty billion, one hundred one million, three thousand, two hundred thirty-one".