1131340312 has 16 divisors (see below), whose sum is σ = 2135502000. Its totient is φ = 561873120.

The previous prime is 1131340303. The next prime is 1131340333. The reversal of 1131340312 is 2130431311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131340312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473364 + ... + 475747.

It is an arithmetic number, because the mean of its divisors is an integer number (133468875).

Almost surely, 2^1131340312 is an apocalyptic number.

It is an amenable number.

1131340312 is a deficient number, since it is larger than the sum of its proper divisors (1004161688).

1131340312 is a wasteful number, since it uses less digits than its factorization.

1131340312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949266 (or 949262 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1131340312 is about 33635.4026585085. The cubic root of 1131340312 is about 1041.9920866180.

Adding to 1131340312 its reverse (2130431311), we get a palindrome (3261771623).

Subtracting 1131340312 from its reverse (2130431311), we obtain a palindrome (999090999).

The spelling of 1131340312 in words is "one billion, one hundred thirty-one million, three hundred forty thousand, three hundred twelve".