73431269 has 2 divisors, whose sum is σ = 73431270. Its totient is φ = 73431268.

The previous prime is 73431247. The next prime is 73431283. The reversal of 73431269 is 96213437.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51294244 + 22137025 = 7162^2 + 4705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73431269 is a prime.

It is a super-2 number, since 2×73431269² = 10784302533900722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73431209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36715634 + 36715635.

It is an arithmetic number, because the mean of its divisors is an integer number (36715635).

Almost surely, 2^73431269 is an apocalyptic number.

It is an amenable number.

73431269 is a deficient number, since it is larger than the sum of its proper divisors (1).

73431269 is an equidigital number, since it uses as much as digits as its factorization.

73431269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 35.

The square root of 73431269 is about 8569.2046888845. The cubic root of 73431269 is about 418.7553267608.

The spelling of 73431269 in words is "seventy-three million, four hundred thirty-one thousand, two hundred sixty-nine".