1166244431 has 4 divisors (see below), whose sum is σ = 1272266664. Its totient is φ = 1060222200.

The previous prime is 1166244427. The next prime is 1166244439. The reversal of 1166244431 is 1344426611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1166244431 - 2² = 1166244427 is a prime.

It is a super-2 number, since 2×1166244431² = 2720252145677027522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166244439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53011100 + ... + 53011121.

It is an arithmetic number, because the mean of its divisors is an integer number (318066666).

Almost surely, 2^1166244431 is an apocalyptic number.

1166244431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166244431 is a deficient number, since it is larger than the sum of its proper divisors (106022233).

1166244431 is a wasteful number, since it uses less digits than its factorization.

1166244431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106022232.

The product of its digits is 13824, while the sum is 32.

The square root of 1166244431 is about 34150.3210965871. The cubic root of 1166244431 is about 1052.5995846516.

The spelling of 1166244431 in words is "one billion, one hundred sixty-six million, two hundred forty-four thousand, four hundred thirty-one".