1154020312 has 8 divisors (see below), whose sum is σ = 2163788100. Its totient is φ = 577010152.

The previous prime is 1154020289. The next prime is 1154020319. The reversal of 1154020312 is 2130204511.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1154020312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154020319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72126262 + ... + 72126277.

Almost surely, 2^1154020312 is an apocalyptic number.

It is an amenable number.

1154020312 is a deficient number, since it is larger than the sum of its proper divisors (1009767788).

1154020312 is a wasteful number, since it uses less digits than its factorization.

1154020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144252545 (or 144252541 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1154020312 is about 33970.8744662247. The cubic root of 1154020312 is about 1048.9090140620.

Adding to 1154020312 its reverse (2130204511), we get a palindrome (3284224823).

The spelling of 1154020312 in words is "one billion, one hundred fifty-four million, twenty thousand, three hundred twelve".