611389231 has 2 divisors, whose sum is σ = 611389232. Its totient is φ = 611389230.

The previous prime is 611389213. The next prime is 611389249. The reversal of 611389231 is 132983116.

611389231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (611389213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (611389213) and next prime (611389249).

It is a cyclic number.

It is not a de Polignac number, because 611389231 - 2⁹ = 611388719 is a prime.

It is a super-2 number, since 2×611389231² = 747593583565542722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611389531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305694615 + 305694616.

It is an arithmetic number, because the mean of its divisors is an integer number (305694616).

Almost surely, 2^611389231 is an apocalyptic number.

611389231 is a deficient number, since it is larger than the sum of its proper divisors (1).

611389231 is an equidigital number, since it uses as much as digits as its factorization.

611389231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 34.

The square root of 611389231 is about 24726.2862355025. The cubic root of 611389231 is about 848.7359439602.

The spelling of 611389231 in words is "six hundred eleven million, three hundred eighty-nine thousand, two hundred thirty-one".