611261331 has 8 divisors (see below), whose sum is σ = 857910720. Its totient is φ = 386059752.

The previous prime is 611261323. The next prime is 611261347. The reversal of 611261331 is 133162116.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 611261331 - 2³ = 611261323 is a prime.

It is a super-2 number, since 2×611261331² = 747280829551783122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (611261351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5361885 + ... + 5361998.

It is an arithmetic number, because the mean of its divisors is an integer number (107238840).

Almost surely, 2^611261331 is an apocalyptic number.

611261331 is a deficient number, since it is larger than the sum of its proper divisors (246649389).

611261331 is a wasteful number, since it uses less digits than its factorization.

611261331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10723905.

The product of its digits is 648, while the sum is 24.

The square root of 611261331 is about 24723.6997838107. The cubic root of 611261331 is about 848.6767558619.

The spelling of 611261331 in words is "six hundred eleven million, two hundred sixty-one thousand, three hundred thirty-one".