29869988731 has 6 divisors (see below), whose sum is σ = 32832301796. Its totient is φ = 27154535100.

The previous prime is 29869988723. The next prime is 29869988783. The reversal of 29869988731 is 13788996892.

It is not a de Polignac number, because 29869988731 - 2³ = 29869988723 is a prime.

It is a super-2 number, since 2×29869988731² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29869982731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123429585 + ... + 123429826.

Almost surely, 2^29869988731 is an apocalyptic number.

29869988731 is a deficient number, since it is larger than the sum of its proper divisors (2962313065).

29869988731 is a wasteful number, since it uses less digits than its factorization.

29869988731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246859433 (or 246859422 counting only the distinct ones).

The product of its digits is 94058496, while the sum is 70.

The spelling of 29869988731 in words is "twenty-nine billion, eight hundred sixty-nine million, nine hundred eighty-eight thousand, seven hundred thirty-one".