12151723 has 6 divisors (see below), whose sum is σ = 12340356. Its totient is φ = 11965932.

The previous prime is 12151717. The next prime is 12151739. The reversal of 12151723 is 32715121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12151723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12151694 and 12151703.

It is not an unprimeable number, because it can be changed into a prime (12151523) 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, 3136 + ... + 5842.

It is an arithmetic number, because the mean of its divisors is an integer number (2056726).

Almost surely, 2^12151723 is an apocalyptic number.

12151723 is a deficient number, since it is larger than the sum of its proper divisors (188633).

12151723 is an frugal number, since it uses more digits than its factorization.

12151723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841 (or 2774 counting only the distinct ones).

The product of its digits is 420, while the sum is 22.

The square root of 12151723 is about 3485.9321565401. The cubic root of 12151723 is about 229.9036962921.

Adding to 12151723 its reverse (32715121), we get a palindrome (44866844).

The spelling of 12151723 in words is "twelve million, one hundred fifty-one thousand, seven hundred twenty-three".