20192729131 has 2 divisors, whose sum is σ = 20192729132. Its totient is φ = 20192729130.

The previous prime is 20192729083. The next prime is 20192729153. The reversal of 20192729131 is 13192729102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20192729131 - 2⁷ = 20192729003 is a prime.

It is a super-2 number, since 2×20192729131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20192729831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10096364565 + 10096364566.

It is an arithmetic number, because the mean of its divisors is an integer number (10096364566).

Almost surely, 2^20192729131 is an apocalyptic number.

20192729131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20192729131 is an equidigital number, since it uses as much as digits as its factorization.

20192729131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 20192729131 in words is "twenty billion, one hundred ninety-two million, seven hundred twenty-nine thousand, one hundred thirty-one".