23743961 has 6 divisors (see below), whose sum is σ = 24355086. Its totient is φ = 23134400.

The previous prime is 23743957. The next prime is 23743963. The reversal of 23743961 is 16934732.

It can be written as a sum of positive squares in 3 ways, for example, as 8094025 + 15649936 = 2845^2 + 3956^2 .

It is not a de Polignac number, because 23743961 - 2² = 23743957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23743963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30821 + ... + 31581.

It is an arithmetic number, because the mean of its divisors is an integer number (4059181).

Almost surely, 2^23743961 is an apocalyptic number.

It is an amenable number.

23743961 is a deficient number, since it is larger than the sum of its proper divisors (611125).

23743961 is an frugal number, since it uses more digits than its factorization.

23743961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563 (or 802 counting only the distinct ones).

The product of its digits is 27216, while the sum is 35.

The square root of 23743961 is about 4872.7775446864. Note that the first 3 decimals coincide. The cubic root of 23743961 is about 287.4204886613.

The spelling of 23743961 in words is "twenty-three million, seven hundred forty-three thousand, nine hundred sixty-one".