23161630 has 32 divisors (see below), whose sum is σ = 43584480. Its totient is φ = 8853120.

The previous prime is 23161613. The next prime is 23161643. The reversal of 23161630 is 3616132.

It is a super-2 number, since 2×23161630² = 1072922208513800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21300 + ... + 22360.

It is an arithmetic number, because the mean of its divisors is an integer number (1362015).

Almost surely, 2^23161630 is an apocalyptic number.

23161630 is a deficient number, since it is larger than the sum of its proper divisors (20422850).

23161630 is a wasteful number, since it uses less digits than its factorization.

23161630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23161630 is about 4812.6531144474. The cubic root of 23161630 is about 285.0513091165.

Adding to 23161630 its reverse (3616132), we get a palindrome (26777762).

The spelling of 23161630 in words is "twenty-three million, one hundred sixty-one thousand, six hundred thirty".