73870231 has 2 divisors, whose sum is σ = 73870232. Its totient is φ = 73870230.

The previous prime is 73870217. The next prime is 73870243. The reversal of 73870231 is 13207837.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73870231 - 2⁷ = 73870103 is a prime.

It is a super-2 number, since 2×73870231² = 10913622055986722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73870193 and 73870202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73870201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36935115 + 36935116.

It is an arithmetic number, because the mean of its divisors is an integer number (36935116).

Almost surely, 2^73870231 is an apocalyptic number.

73870231 is a deficient number, since it is larger than the sum of its proper divisors (1).

73870231 is an equidigital number, since it uses as much as digits as its factorization.

73870231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 73870231 is about 8594.7792874512. The cubic root of 73870231 is about 419.5880901096.

The spelling of 73870231 in words is "seventy-three million, eight hundred seventy thousand, two hundred thirty-one".