1161322023 has 16 divisors (see below), whose sum is σ = 1604949120. Its totient is φ = 746059104.

The previous prime is 1161321989. The next prime is 1161322051. The reversal of 1161322023 is 3202231611.

It is not a de Polignac number, because 1161322023 - 2¹⁰ = 1161320999 is a prime.

It is a super-2 number, since 2×1161322023² = 2697337682209625058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161322073) 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, 32740 + ... + 58262.

It is an arithmetic number, because the mean of its divisors is an integer number (100309320).

Almost surely, 2^1161322023 is an apocalyptic number.

1161322023 is a deficient number, since it is larger than the sum of its proper divisors (443627097).

1161322023 is a wasteful number, since it uses less digits than its factorization.

1161322023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26078.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1161322023 is about 34078.1751712148. The cubic root of 1161322023 is about 1051.1165818080.

Adding to 1161322023 its reverse (3202231611), we get a palindrome (4363553634).

The spelling of 1161322023 in words is "one billion, one hundred sixty-one million, three hundred twenty-two thousand, twenty-three".