1231043035 has 16 divisors (see below), whose sum is σ = 1510096896. Its totient is φ = 962977248.

The previous prime is 1231043027. The next prime is 1231043071. The reversal of 1231043035 is 5303401321.

It is a cyclic number.

It is not a de Polignac number, because 1231043035 - 2³ = 1231043027 is a prime.

It is a super-2 number, since 2×1231043035² = 3030933908044022450, 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 = 1231042997 and 1231043015.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366574 + ... + 369916.

It is an arithmetic number, because the mean of its divisors is an integer number (94381056).

Almost surely, 2^1231043035 is an apocalyptic number.

1231043035 is a deficient number, since it is larger than the sum of its proper divisors (279053861).

1231043035 is a wasteful number, since it uses less digits than its factorization.

1231043035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1231043035 is about 35086.2228659626. Note that the first 3 decimals coincide. The cubic root of 1231043035 is about 1071.7440434037.

Adding to 1231043035 its reverse (5303401321), we get a palindrome (6534444356).

The spelling of 1231043035 in words is "one billion, two hundred thirty-one million, forty-three thousand, thirty-five".