654211231 has 2 divisors, whose sum is σ = 654211232. Its totient is φ = 654211230.

The previous prime is 654211213. The next prime is 654211237. The reversal of 654211231 is 132112456.

It is a happy number.

Together with previous prime (654211213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 654211231 - 2⁵ = 654211199 is a prime.

It is a super-2 number, since 2×654211231² = 855984669533070722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 654211196 and 654211205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (654211237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327105615 + 327105616.

It is an arithmetic number, because the mean of its divisors is an integer number (327105616).

Almost surely, 2^654211231 is an apocalyptic number.

654211231 is a deficient number, since it is larger than the sum of its proper divisors (1).

654211231 is an equidigital number, since it uses as much as digits as its factorization.

654211231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 654211231 is about 25577.5532645326. The cubic root of 654211231 is about 868.1058146287.

Adding to 654211231 its reverse (132112456), we get a palindrome (786323687).

The spelling of 654211231 in words is "six hundred fifty-four million, two hundred eleven thousand, two hundred thirty-one".