40228731229 has 2 divisors, whose sum is σ = 40228731230. Its totient is φ = 40228731228.

The previous prime is 40228731209. The next prime is 40228731281. The reversal of 40228731229 is 92213782204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812940100 + 1415791129 = 197010^2 + 37627^2 .

It is a cyclic number.

It is not a de Polignac number, because 40228731229 - 2³⁵ = 5868992861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40228731191 and 40228731200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40228731209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20114365614 + 20114365615.

It is an arithmetic number, because the mean of its divisors is an integer number (20114365615).

Almost surely, 2^40228731229 is an apocalyptic number.

It is an amenable number.

40228731229 is a deficient number, since it is larger than the sum of its proper divisors (1).

40228731229 is an equidigital number, since it uses as much as digits as its factorization.

40228731229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 40.

The spelling of 40228731229 in words is "forty billion, two hundred twenty-eight million, seven hundred thirty-one thousand, two hundred twenty-nine".