1145312205 has 16 divisors (see below), whose sum is σ = 1891613184. Its totient is φ = 591128640.

The previous prime is 1145312197. The next prime is 1145312213. The reversal of 1145312205 is 5022135411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1145312197) and next prime (1145312213).

It is not a de Polignac number, because 1145312205 - 2³ = 1145312197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231054 + ... + 1231983.

It is an arithmetic number, because the mean of its divisors is an integer number (118225824).

Almost surely, 2^1145312205 is an apocalyptic number.

1145312205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145312205 is a deficient number, since it is larger than the sum of its proper divisors (746300979).

1145312205 is a wasteful number, since it uses less digits than its factorization.

1145312205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463076.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1145312205 is about 33842.4615682725. The cubic root of 1145312205 is about 1046.2640336186.

Adding to 1145312205 its reverse (5022135411), we get a palindrome (6167447616).

The spelling of 1145312205 in words is "one billion, one hundred forty-five million, three hundred twelve thousand, two hundred five".