1131240344 has 32 divisors (see below), whose sum is σ = 2357927040. Its totient is φ = 505267200.

The previous prime is 1131240329. The next prime is 1131240379. The reversal of 1131240344 is 4430421311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172217 + ... + 178664.

It is an arithmetic number, because the mean of its divisors is an integer number (73685220).

Almost surely, 2^1131240344 is an apocalyptic number.

It is an amenable number.

1131240344 is an abundant number, since it is smaller than the sum of its proper divisors (1226686696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131240344 is a wasteful number, since it uses less digits than its factorization.

1131240344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350931 (or 350927 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 1131240344 is about 33633.9165724124. The cubic root of 1131240344 is about 1041.9613947233.

Adding to 1131240344 its reverse (4430421311), we get a palindrome (5561661655).

The spelling of 1131240344 in words is "one billion, one hundred thirty-one million, two hundred forty thousand, three hundred forty-four".