1123031402 has 8 divisors (see below), whose sum is σ = 1685513316. Its totient is φ = 561193632.

The previous prime is 1123031323. The next prime is 1123031443. The reversal of 1123031402 is 2041303211.

It can be written as a sum of positive squares in 2 ways, for example, as 1086295681 + 36735721 = 32959^2 + 6061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1123031402² = 2522399059756171208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156653 + ... + 163664.

Almost surely, 2^1123031402 is an apocalyptic number.

1123031402 is a deficient number, since it is larger than the sum of its proper divisors (562481914).

1123031402 is a wasteful number, since it uses less digits than its factorization.

1123031402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322072.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1123031402 is about 33511.6606869907. The cubic root of 1123031402 is about 1039.4349130584.

Adding to 1123031402 its reverse (2041303211), we get a palindrome (3164334613).

Subtracting 1123031402 from its reverse (2041303211), we obtain a square (918271809 = 30303²).

The spelling of 1123031402 in words is "one billion, one hundred twenty-three million, thirty-one thousand, four hundred two".