1331224156 has 12 divisors (see below), whose sum is σ = 2362454640. Its totient is φ = 656237120.

The previous prime is 1331224019. The next prime is 1331224159. The reversal of 1331224156 is 6514221331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331224159) 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, 2343421 + ... + 2343988.

It is an arithmetic number, because the mean of its divisors is an integer number (196871220).

Almost surely, 2^1331224156 is an apocalyptic number.

It is an amenable number.

1331224156 is a deficient number, since it is larger than the sum of its proper divisors (1031230484).

1331224156 is a wasteful number, since it uses less digits than its factorization.

1331224156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4687484 (or 4687482 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 1331224156 is about 36485.9446362568. The cubic root of 1331224156 is about 1100.0617474980.

Adding to 1331224156 its reverse (6514221331), we get a palindrome (7845445487).

The spelling of 1331224156 in words is "one billion, three hundred thirty-one million, two hundred twenty-four thousand, one hundred fifty-six".