611231151 has 16 divisors (see below), whose sum is σ = 828107264. Its totient is φ = 400935744.

The previous prime is 611231147. The next prime is 611231161. The reversal of 611231151 is 151132116.

It is a happy number.

It is not a de Polignac number, because 611231151 - 2² = 611231147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611231161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284955 + ... + 287091.

It is an arithmetic number, because the mean of its divisors is an integer number (51756704).

Almost surely, 2^611231151 is an apocalyptic number.

611231151 is a deficient number, since it is larger than the sum of its proper divisors (216876113).

611231151 is a wasteful number, since it uses less digits than its factorization.

611231151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3630.

The product of its digits is 180, while the sum is 21.

The square root of 611231151 is about 24723.0894307326. The cubic root of 611231151 is about 848.6627883029.

Adding to 611231151 its reverse (151132116), we get a palindrome (762363267).

The spelling of 611231151 in words is "six hundred eleven million, two hundred thirty-one thousand, one hundred fifty-one".