1331207448 has 32 divisors (see below), whose sum is σ = 3351969600. Its totient is φ = 440542368.

The previous prime is 1331207447. The next prime is 1331207489. The reversal of 1331207448 is 8447021331.

It is a super-2 number, since 2×1331207448² = 3544226539221345408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331207447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196186 + ... + 202857.

It is an arithmetic number, because the mean of its divisors is an integer number (104749050).

Almost surely, 2^1331207448 is an apocalyptic number.

It is an amenable number.

1331207448 is an abundant number, since it is smaller than the sum of its proper divisors (2020762152).

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

1331207448 is a wasteful number, since it uses less digits than its factorization.

1331207448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399191 (or 399187 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1331207448 is about 36485.7156706566. The cubic root of 1331207448 is about 1100.0571452406.

Adding to 1331207448 its reverse (8447021331), we get a palindrome (9778228779).

The spelling of 1331207448 in words is "one billion, three hundred thirty-one million, two hundred seven thousand, four hundred forty-eight".