3129741623 has 4 divisors (see below), whose sum is σ = 3160127568. Its totient is φ = 3099355680.

The previous prime is 3129741613. The next prime is 3129741649. The reversal of 3129741623 is 3261479213.

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

It is a cyclic number.

It is not a de Polignac number, because 3129741623 - 2²⁶ = 3062632759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3129741613) 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, 15192818 + ... + 15193023.

It is an arithmetic number, because the mean of its divisors is an integer number (790031892).

Almost surely, 2^3129741623 is an apocalyptic number.

3129741623 is a deficient number, since it is larger than the sum of its proper divisors (30385945).

3129741623 is a wasteful number, since it uses less digits than its factorization.

3129741623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30385944.

The product of its digits is 54432, while the sum is 38.

The square root of 3129741623 is about 55944.0937275777. The cubic root of 3129741623 is about 1462.7479402173.

The spelling of 3129741623 in words is "three billion, one hundred twenty-nine million, seven hundred forty-one thousand, six hundred twenty-three".