20123010001031 has 16 divisors (see below), whose sum is σ = 23942837753664. Its totient is φ = 16552232043264.

The previous prime is 20123010001019. The next prime is 20123010001049. The reversal of 20123010001031 is 13010001032102.

It is a cyclic number.

It is not a de Polignac number, because 20123010001031 - 2¹⁰ = 20123010000007 is a prime.

It is a super-2 number, since 2×20123010001031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20123010000997 and 20123010001015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123010001231) 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, 532138760 + ... + 532176573.

It is an arithmetic number, because the mean of its divisors is an integer number (1496427359604).

Almost surely, 2^{20123010001031} is an apocalyptic number.

20123010001031 is a deficient number, since it is larger than the sum of its proper divisors (3819827752633).

20123010001031 is a wasteful number, since it uses less digits than its factorization.

20123010001031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064315450.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20123010001031 its reverse (13010001032102), we get a palindrome (33133011033133).

The spelling of 20123010001031 in words is "twenty trillion, one hundred twenty-three billion, ten million, one thousand, thirty-one".