611012291 has 2 divisors, whose sum is σ = 611012292. Its totient is φ = 611012290.

The previous prime is 611012287. The next prime is 611012293. The reversal of 611012291 is 192210116.

It is a happy number.

611012291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611012291 - 2² = 611012287 is a prime.

Together with 611012293, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (611012293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305506145 + 305506146.

It is an arithmetic number, because the mean of its divisors is an integer number (305506146).

Almost surely, 2^611012291 is an apocalyptic number.

611012291 is a deficient number, since it is larger than the sum of its proper divisors (1).

611012291 is an equidigital number, since it uses as much as digits as its factorization.

611012291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 611012291 is about 24718.6628076844. The cubic root of 611012291 is about 848.5614842868.

The spelling of 611012291 in words is "six hundred eleven million, twelve thousand, two hundred ninety-one".