20101030123 has 8 divisors (see below), whose sum is σ = 20233962848. Its totient is φ = 19968159744.

The previous prime is 20101030093. The next prime is 20101030139. The reversal of 20101030123 is 32103010102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20101030123 - 2⁵ = 20101030091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20101030223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756715 + ... + 782827.

It is an arithmetic number, because the mean of its divisors is an integer number (2529245356).

Almost surely, 2^20101030123 is an apocalyptic number.

20101030123 is a deficient number, since it is larger than the sum of its proper divisors (132932725).

20101030123 is a wasteful number, since it uses less digits than its factorization.

20101030123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31173.

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

Adding to 20101030123 its reverse (32103010102), we get a palindrome (52204040225).

The spelling of 20101030123 in words is "twenty billion, one hundred one million, thirty thousand, one hundred twenty-three".