20100231013 has 4 divisors (see below), whose sum is σ = 20119356928. Its totient is φ = 20081105100.

The previous prime is 20100230987. The next prime is 20100231031. The reversal of 20100231013 is 31013200102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20100231013 - 2⁵ = 20100230981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20100230984 and 20100231002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100231313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9561381 + ... + 9563482.

It is an arithmetic number, because the mean of its divisors is an integer number (5029839232).

Almost surely, 2^20100231013 is an apocalyptic number.

It is an amenable number.

20100231013 is a deficient number, since it is larger than the sum of its proper divisors (19125915).

20100231013 is a wasteful number, since it uses less digits than its factorization.

20100231013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19125914.

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

Adding to 20100231013 its reverse (31013200102), we get a palindrome (51113431115).

The spelling of 20100231013 in words is "twenty billion, one hundred million, two hundred thirty-one thousand, thirteen".