1153212023 has 4 divisors (see below), whose sum is σ = 1154245560. Its totient is φ = 1152178488.

The previous prime is 1153211963. The next prime is 1153212029. The reversal of 1153212023 is 3202123511.

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 1153212023 - 2⁶ = 1153211959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153211986 and 1153212004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153212029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 515093 + ... + 517326.

It is an arithmetic number, because the mean of its divisors is an integer number (288561390).

Almost surely, 2^1153212023 is an apocalyptic number.

1153212023 is a deficient number, since it is larger than the sum of its proper divisors (1033537).

1153212023 is a wasteful number, since it uses less digits than its factorization.

1153212023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033536.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1153212023 is about 33958.9755882005. The cubic root of 1153212023 is about 1048.6640675830.

Adding to 1153212023 its reverse (3202123511), we get a palindrome (4355335534).

The spelling of 1153212023 in words is "one billion, one hundred fifty-three million, two hundred twelve thousand, twenty-three".