1155404312 has 16 divisors (see below), whose sum is σ = 2241086400. Its totient is φ = 557781280.

The previous prime is 1155404311. The next prime is 1155404329. The reversal of 1155404312 is 2134045511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1155404311) 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, 2489864 + ... + 2490327.

It is an arithmetic number, because the mean of its divisors is an integer number (140067900).

Almost surely, 2^1155404312 is an apocalyptic number.

It is an amenable number.

1155404312 is a deficient number, since it is larger than the sum of its proper divisors (1085682088).

1155404312 is a wasteful number, since it uses less digits than its factorization.

1155404312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980226 (or 4980222 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1155404312 is about 33991.2387535377. The cubic root of 1155404312 is about 1049.3281603908.

Adding to 1155404312 its reverse (2134045511), we get a palindrome (3289449823).

The spelling of 1155404312 in words is "one billion, one hundred fifty-five million, four hundred four thousand, three hundred twelve".