29212731193 has 4 divisors (see below), whose sum is σ = 29351180368. Its totient is φ = 29074282020.

The previous prime is 29212731161. The next prime is 29212731221. The reversal of 29212731193 is 39113721292.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 29212731193 - 2⁵ = 29212731161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29212731143) 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, 69224271 + ... + 69224692.

It is an arithmetic number, because the mean of its divisors is an integer number (7337795092).

Almost surely, 2^29212731193 is an apocalyptic number.

It is an amenable number.

29212731193 is a deficient number, since it is larger than the sum of its proper divisors (138449175).

29212731193 is a wasteful number, since it uses less digits than its factorization.

29212731193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138449174.

The product of its digits is 40824, while the sum is 40.

Subtracting 29212731193 from its reverse (39113721292), we obtain a palindrome (9900990099).

The spelling of 29212731193 in words is "twenty-nine billion, two hundred twelve million, seven hundred thirty-one thousand, one hundred ninety-three".