1145111023 has 16 divisors (see below), whose sum is σ = 1362170880. Its totient is φ = 941836896.

The previous prime is 1145110991. The next prime is 1145111029. The reversal of 1145111023 is 3201115411.

It is not a de Polignac number, because 1145111023 - 2⁵ = 1145110991 is a prime.

It is a super-2 number, since 2×1145111023² = 2622558509992213058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145111029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15786 + ... + 50392.

It is an arithmetic number, because the mean of its divisors is an integer number (85135680).

Almost surely, 2^1145111023 is an apocalyptic number.

1145111023 is a deficient number, since it is larger than the sum of its proper divisors (217059857).

1145111023 is a wasteful number, since it uses less digits than its factorization.

1145111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34806.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1145111023 is about 33839.4891066635. The cubic root of 1145111023 is about 1046.2027688631.

Adding to 1145111023 its reverse (3201115411), we get a palindrome (4346226434).

The spelling of 1145111023 in words is "one billion, one hundred forty-five million, one hundred eleven thousand, twenty-three".