23143149 has 6 divisors (see below), whose sum is σ = 33429006. Its totient is φ = 15428760.

The previous prime is 23143111. The next prime is 23143151. The reversal of 23143149 is 94134132.

It can be written as a sum of positive squares in only one way, i.e., 22867524 + 275625 = 4782^2 + 525^2 .

It is a de Polignac number, because none of the positive numbers 2^k-23143149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23143199) 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, 1285722 + ... + 1285739.

It is an arithmetic number, because the mean of its divisors is an integer number (5571501).

Almost surely, 2^23143149 is an apocalyptic number.

It is an amenable number.

23143149 is a deficient number, since it is larger than the sum of its proper divisors (10285857).

23143149 is a wasteful number, since it uses less digits than its factorization.

23143149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571467 (or 2571464 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 23143149 is about 4810.7326884790. The cubic root of 23143149 is about 284.9754734203.

The spelling of 23143149 in words is "twenty-three million, one hundred forty-three thousand, one hundred forty-nine".