1031103123312 has 40 divisors (see below), whose sum is σ = 2663725291920. Its totient is φ = 343695592960.

The previous prime is 1031103123247. The next prime is 1031103123331. The reversal of 1031103123312 is 2133213011301.

It is a happy number.

It is a super-2 number, since 2×1031103123312² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3885364 + ... + 4142252.

It is an arithmetic number, because the mean of its divisors is an integer number (66593132298).

Almost surely, 2^{1031103123312} is an apocalyptic number.

1031103123312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1031103123312 is an abundant number, since it is smaller than the sum of its proper divisors (1632622168608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031103123312 is a wasteful number, since it uses less digits than its factorization.

1031103123312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340521 (or 340515 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1031103123312 its reverse (2133213011301), we get a palindrome (3164316134613).

The spelling of 1031103123312 in words is "one trillion, thirty-one billion, one hundred three million, one hundred twenty-three thousand, three hundred twelve".