1131520348 has 18 divisors (see below), whose sum is σ = 2303452536. Its totient is φ = 484937208.

The previous prime is 1131520339. The next prime is 1131520381. The reversal of 1131520348 is 8430251311.

It is a happy number.

It is a super-2 number, since 2×1131520348² = 2560676595876082208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2886336 + ... + 2886727.

Almost surely, 2^1131520348 is an apocalyptic number.

It is an amenable number.

1131520348 is an abundant number, since it is smaller than the sum of its proper divisors (1171932188).

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

1131520348 is a wasteful number, since it uses less digits than its factorization.

1131520348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773081 (or 5773072 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 1131520348 is about 33638.0788393154. The cubic root of 1131520348 is about 1042.0473562056.

Adding to 1131520348 its reverse (8430251311), we get a palindrome (9561771659).

The spelling of 1131520348 in words is "one billion, one hundred thirty-one million, five hundred twenty thousand, three hundred forty-eight".