20123103320031 has 16 divisors (see below), whose sum is σ = 26871237656064. Its totient is φ = 13395186783264.

The previous prime is 20123103320027. The next prime is 20123103320039. The reversal of 20123103320031 is 13002330132102.

It is not a de Polignac number, because 20123103320031 - 2² = 20123103320027 is a prime.

It is a super-2 number, since 2×20123103320031² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123103320039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78201126 + ... + 78458028.

It is an arithmetic number, because the mean of its divisors is an integer number (1679452353504).

Almost surely, 2^{20123103320031} is an apocalyptic number.

20123103320031 is a deficient number, since it is larger than the sum of its proper divisors (6748134336033).

20123103320031 is a wasteful number, since it uses less digits than its factorization.

20123103320031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296150.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 20123103320031 its reverse (13002330132102), we get a palindrome (33125433452133).

The spelling of 20123103320031 in words is "twenty trillion, one hundred twenty-three billion, one hundred three million, three hundred twenty thousand, thirty-one".