16135723 has 4 divisors (see below), whose sum is σ = 16253640. Its totient is φ = 16017808.

The previous prime is 16135699. The next prime is 16135727. The reversal of 16135723 is 32753161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32753161 = 7 ⋅4679023.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16135723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16135691 and 16135700.

It is not an unprimeable number, because it can be changed into a prime (16135727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58753 + ... + 59026.

It is an arithmetic number, because the mean of its divisors is an integer number (4063410).

Almost surely, 2^16135723 is an apocalyptic number.

16135723 is a deficient number, since it is larger than the sum of its proper divisors (117917).

16135723 is a wasteful number, since it uses less digits than its factorization.

16135723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117916.

The product of its digits is 3780, while the sum is 28.

The square root of 16135723 is about 4016.9295487972. The cubic root of 16135723 is about 252.6947058812.

Adding to 16135723 its reverse (32753161), we get a palindrome (48888884).

It can be divided in two parts, 1613572 and 3, that multiplied together give a triangular number (4840716 = T₃₁₁₁).

The spelling of 16135723 in words is "sixteen million, one hundred thirty-five thousand, seven hundred twenty-three".