1131111002023 has 4 divisors (see below), whose sum is σ = 1132268742000. Its totient is φ = 1129953262048.

The previous prime is 1131111002011. The next prime is 1131111002107. The reversal of 1131111002023 is 3202001111311.

It is a happy number.

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 1131111002023 - 2²⁹ = 1130574131111 is a prime.

It is a super-2 number, since 2×1131111002023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131111001988 and 1131111002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131111002123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578868523 + ... + 578870476.

It is an arithmetic number, because the mean of its divisors is an integer number (283067185500).

Almost surely, 2^{1131111002023} is an apocalyptic number.

1131111002023 is a deficient number, since it is larger than the sum of its proper divisors (1157739977).

1131111002023 is an equidigital number, since it uses as much as digits as its factorization.

1131111002023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157739976.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1131111002023 its reverse (3202001111311), we get a palindrome (4333112113334).

The spelling of 1131111002023 in words is "one trillion, one hundred thirty-one billion, one hundred eleven million, two thousand, twenty-three".