23161870 has 16 divisors (see below), whose sum is σ = 41750640. Its totient is φ = 9251584.

The previous prime is 23161861. The next prime is 23161877. The reversal of 23161870 is 7816132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23161877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9054 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (2609415).

Almost surely, 2^23161870 is an apocalyptic number.

23161870 is a deficient number, since it is larger than the sum of its proper divisors (18588770).

23161870 is a wasteful number, since it uses less digits than its factorization.

23161870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3299.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 23161870 is about 4812.6780486544. The cubic root of 23161870 is about 285.0522936770.

It can be divided in two parts, 2316 and 1870, that added together give a triangular number (4186 = T₉₁).

The spelling of 23161870 in words is "twenty-three million, one hundred sixty-one thousand, eight hundred seventy".