1145055311 has 8 divisors (see below), whose sum is σ = 1207945200. Its totient is φ = 1082427840.

The previous prime is 1145055287. The next prime is 1145055319. The reversal of 1145055311 is 1135505411.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1145055311 is a prime.

It is a super-2 number, since 2×1145055311² = 2622303330498613442, 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 (1145055319) 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, 56606 + ... + 74123.

It is an arithmetic number, because the mean of its divisors is an integer number (150993150).

Almost surely, 2^1145055311 is an apocalyptic number.

1145055311 is a deficient number, since it is larger than the sum of its proper divisors (62889889).

1145055311 is a wasteful number, since it uses less digits than its factorization.

1145055311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131209.

The product of its (nonzero) digits is 1500, while the sum is 26.

The square root of 1145055311 is about 33838.6659163744. The cubic root of 1145055311 is about 1046.1858019510.

The spelling of 1145055311 in words is "one billion, one hundred forty-five million, fifty-five thousand, three hundred eleven".