29231312839 has 32 divisors (see below), whose sum is σ = 30890401344. Its totient is φ = 27636940800.

The previous prime is 29231312837. The next prime is 29231312849. The reversal of 29231312839 is 93821313292.

It is a cyclic number.

It is not a de Polignac number, because 29231312839 - 2¹ = 29231312837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29231312795 and 29231312804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29231312837) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43434007 + ... + 43434679.

It is an arithmetic number, because the mean of its divisors is an integer number (965325042).

Almost surely, 2^29231312839 is an apocalyptic number.

29231312839 is a deficient number, since it is larger than the sum of its proper divisors (1659088505).

29231312839 is a wasteful number, since it uses less digits than its factorization.

29231312839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027.

The product of its digits is 139968, while the sum is 43.

The spelling of 29231312839 in words is "twenty-nine billion, two hundred thirty-one million, three hundred twelve thousand, eight hundred thirty-nine".