231723153944 has 8 divisors (see below), whose sum is σ = 434480913660. Its totient is φ = 115861576968.

The previous prime is 231723153941. The next prime is 231723153967. The reversal of 231723153944 is 449351327132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 231723153895 and 231723153904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231723153941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14482697114 + ... + 14482697129.

Almost surely, 2^231723153944 is an apocalyptic number.

It is an amenable number.

231723153944 is a deficient number, since it is larger than the sum of its proper divisors (202757759716).

231723153944 is a wasteful number, since it uses less digits than its factorization.

231723153944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28965394249 (or 28965394245 counting only the distinct ones).

The product of its digits is 544320, while the sum is 44.

The spelling of 231723153944 in words is "two hundred thirty-one billion, seven hundred twenty-three million, one hundred fifty-three thousand, nine hundred forty-four".