1012031123 has 4 divisors (see below), whose sum is σ = 1020000000. Its totient is φ = 1004062248.

The previous prime is 1012031117. The next prime is 1012031161. The reversal of 1012031123 is 3211302101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3211302101 = 7 ⋅458757443.

It is a cyclic number.

It is not a de Polignac number, because 1012031123 - 2⁴ = 1012031107 is a prime.

It is a super-2 number, since 2×1012031123² = 2048413987841282258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1012031098 and 1012031107.

It is not an unprimeable number, because it can be changed into a prime (1012031173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3984248 + ... + 3984501.

It is an arithmetic number, because the mean of its divisors is an integer number (255000000).

Almost surely, 2^1012031123 is an apocalyptic number.

1012031123 is a deficient number, since it is larger than the sum of its proper divisors (7968877).

1012031123 is an equidigital number, since it uses as much as digits as its factorization.

1012031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7968876.

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

The square root of 1012031123 is about 31812.4366089742. The cubic root of 1012031123 is about 1003.9943978751.

Adding to 1012031123 its reverse (3211302101), we get a palindrome (4223333224).

The spelling of 1012031123 in words is "one billion, twelve million, thirty-one thousand, one hundred twenty-three".