229920731269 has 2 divisors, whose sum is σ = 229920731270. Its totient is φ = 229920731268.

The previous prime is 229920731231. The next prime is 229920731279. The reversal of 229920731269 is 962137029922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229693023169 + 227708100 = 479263^2 + 15090^2 .

It is a cyclic number.

It is not a de Polignac number, because 229920731269 - 2¹³ = 229920723077 is a prime.

It is a super-2 number, since 2×229920731269² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229920731279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114960365634 + 114960365635.

It is an arithmetic number, because the mean of its divisors is an integer number (114960365635).

Almost surely, 2^229920731269 is an apocalyptic number.

It is an amenable number.

229920731269 is a deficient number, since it is larger than the sum of its proper divisors (1).

229920731269 is an equidigital number, since it uses as much as digits as its factorization.

229920731269 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 229920731269 in words is "two hundred twenty-nine billion, nine hundred twenty million, seven hundred thirty-one thousand, two hundred sixty-nine".