1043123131 has 4 divisors (see below), whose sum is σ = 1044078592. Its totient is φ = 1042167672.

The previous prime is 1043123113. The next prime is 1043123143. The reversal of 1043123131 is 1313213401.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1043123131 - 2¹¹ = 1043121083 is a prime.

It is a super-2 number, since 2×1043123131² = 2176211732854486322, 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 = 1043123099 and 1043123108.

It is not an unprimeable number, because it can be changed into a prime (1043123171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476091 + ... + 478276.

It is an arithmetic number, because the mean of its divisors is an integer number (261019648).

Almost surely, 2^1043123131 is an apocalyptic number.

1043123131 is a deficient number, since it is larger than the sum of its proper divisors (955461).

1043123131 is an equidigital number, since it uses as much as digits as its factorization.

1043123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955460.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1043123131 is about 32297.4167852477. The cubic root of 1043123131 is about 1014.1725664519.

Adding to 1043123131 its reverse (1313213401), we get a palindrome (2356336532).

The spelling of 1043123131 in words is "one billion, forty-three million, one hundred twenty-three thousand, one hundred thirty-one".