20123031111301 has 8 divisors (see below), whose sum is σ = 20645995646808. Its totient is φ = 19601597952000.

The previous prime is 20123031111263. The next prime is 20123031111349. The reversal of 20123031111301 is 10311113032102.

It can be written as a sum of positive squares in 4 ways, for example, as 396209025 + 20122634902276 = 19905^2 + 4485826^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20123031111301 is a prime.

It is a super-2 number, since 2×20123031111301² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123031111371) 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, 382817430 + ... + 382869991.

It is an arithmetic number, because the mean of its divisors is an integer number (2580749455851).

Almost surely, 2^{20123031111301} is an apocalyptic number.

It is an amenable number.

20123031111301 is a deficient number, since it is larger than the sum of its proper divisors (522964535507).

20123031111301 is an equidigital number, since it uses as much as digits as its factorization.

20123031111301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765688103.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20123031111301 its reverse (10311113032102), we get a palindrome (30434144143403).

The spelling of 20123031111301 in words is "twenty trillion, one hundred twenty-three billion, thirty-one million, one hundred eleven thousand, three hundred one".