16131029 has 4 divisors (see below), whose sum is σ = 16352076. Its totient is φ = 15909984.

The previous prime is 16130993. The next prime is 16131043. The reversal of 16131029 is 92013161.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6240004 + 9891025 = 2498^2 + 3145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16131029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16130995 and 16131013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16131229) 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, 110414 + ... + 110559.

It is an arithmetic number, because the mean of its divisors is an integer number (4088019).

Almost surely, 2^16131029 is an apocalyptic number.

It is an amenable number.

16131029 is a deficient number, since it is larger than the sum of its proper divisors (221047).

16131029 is an equidigital number, since it uses as much as digits as its factorization.

16131029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221046.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 16131029 is about 4016.3452291854. The cubic root of 16131029 is about 252.6701999244.

The spelling of 16131029 in words is "sixteen million, one hundred thirty-one thousand, twenty-nine".