1123311031001 has 4 divisors (see below), whose sum is σ = 1133616636900. Its totient is φ = 1113005425104.

The previous prime is 1123311030929. The next prime is 1123311031013. The reversal of 1123311031001 is 1001301133211.

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

It can be written as a sum of positive squares in 2 ways, for example, as 977035379401 + 146275651600 = 988451^2 + 382460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123311031001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123311031201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5152802786 + ... + 5152803003.

It is an arithmetic number, because the mean of its divisors is an integer number (283404159225).

Almost surely, 2^{1123311031001} is an apocalyptic number.

It is an amenable number.

1123311031001 is a deficient number, since it is larger than the sum of its proper divisors (10305605899).

1123311031001 is a wasteful number, since it uses less digits than its factorization.

1123311031001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10305605898.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1123311031001 its reverse (1001301133211), we get a palindrome (2124612164212).

The spelling of 1123311031001 in words is "one trillion, one hundred twenty-three billion, three hundred eleven million, thirty-one thousand, one".