1010203131123 has 12 divisors (see below), whose sum is σ = 1459404112608. Its totient is φ = 673366379280.

The previous prime is 1010203131109. The next prime is 1010203131193. The reversal of 1010203131123 is 3211313020101.

It is not a de Polignac number, because 1010203131123 - 2⁴ = 1010203131107 is a prime.

It is a super-2 number, since 2×1010203131123² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1010203131096 and 1010203131105.

It is not an unprimeable number, because it can be changed into a prime (1010203131103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8468715 + ... + 8587172.

It is an arithmetic number, because the mean of its divisors is an integer number (121617009384).

Almost surely, 2^{1010203131123} is an apocalyptic number.

1010203131123 is a deficient number, since it is larger than the sum of its proper divisors (449200981485).

1010203131123 is a wasteful number, since it uses less digits than its factorization.

1010203131123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17062474 (or 17062471 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1010203131123 its reverse (3211313020101), we get a palindrome (4221516151224).

The spelling of 1010203131123 in words is "one trillion, ten billion, two hundred three million, one hundred thirty-one thousand, one hundred twenty-three".