785497231 has 2 divisors, whose sum is σ = 785497232. Its totient is φ = 785497230.

The previous prime is 785497199. The next prime is 785497243. The reversal of 785497231 is 132794587.

It is a strong prime.

It is an emirp because it is prime and its reverse (132794587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 785497231 - 2⁵ = 785497199 is a prime.

It is a super-2 number, since 2×785497231² = 1234011799817334722, 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 (785497831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 392748615 + 392748616.

It is an arithmetic number, because the mean of its divisors is an integer number (392748616).

Almost surely, 2^785497231 is an apocalyptic number.

785497231 is a deficient number, since it is larger than the sum of its proper divisors (1).

785497231 is an equidigital number, since it uses as much as digits as its factorization.

785497231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 423360, while the sum is 46.

The square root of 785497231 is about 28026.7235152452. The cubic root of 785497231 is about 922.6738654330.

The spelling of 785497231 in words is "seven hundred eighty-five million, four hundred ninety-seven thousand, two hundred thirty-one".