611231147 has 2 divisors, whose sum is σ = 611231148. Its totient is φ = 611231146.

The previous prime is 611231077. The next prime is 611231161. The reversal of 611231147 is 741132116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611231147 - 2²⁶ = 544122283 is a prime.

It is not a weakly prime, because it can be changed into another prime (614231147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305615573 + 305615574.

It is an arithmetic number, because the mean of its divisors is an integer number (305615574).

Almost surely, 2^611231147 is an apocalyptic number.

611231147 is a deficient number, since it is larger than the sum of its proper divisors (1).

611231147 is an equidigital number, since it uses as much as digits as its factorization.

611231147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 26.

The square root of 611231147 is about 24723.0893498365. The cubic root of 611231147 is about 848.6627864516.

The spelling of 611231147 in words is "six hundred eleven million, two hundred thirty-one thousand, one hundred forty-seven".