29185842131 has 4 divisors (see below), whose sum is σ = 30902656392. Its totient is φ = 27469027872.

The previous prime is 29185842113. The next prime is 29185842139. The reversal of 29185842131 is 13124858192.

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 29185842131 - 2⁶ = 29185842067 is a prime.

It is a super-2 number, since 2×29185842131² (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 (29185842139) 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, 858407105 + ... + 858407138.

It is an arithmetic number, because the mean of its divisors is an integer number (7725664098).

Almost surely, 2^29185842131 is an apocalyptic number.

29185842131 is a deficient number, since it is larger than the sum of its proper divisors (1716814261).

29185842131 is a wasteful number, since it uses less digits than its factorization.

29185842131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716814260.

The product of its digits is 138240, while the sum is 44.

The spelling of 29185842131 in words is "twenty-nine billion, one hundred eighty-five million, eight hundred forty-two thousand, one hundred thirty-one".