1331031272 has 16 divisors (see below), whose sum is σ = 2502640800. Its totient is φ = 663660400.

The previous prime is 1331031239. The next prime is 1331031281. The reversal of 1331031272 is 2721301331.

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, 228854 + ... + 234597.

It is an arithmetic number, because the mean of its divisors is an integer number (156415050).

Almost surely, 2^1331031272 is an apocalyptic number.

It is an amenable number.

1331031272 is a deficient number, since it is larger than the sum of its proper divisors (1171609528).

1331031272 is a wasteful number, since it uses less digits than its factorization.

1331031272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463816 (or 463812 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 1331031272 is about 36483.3012760633. The cubic root of 1331031272 is about 1100.0086148086.

The spelling of 1331031272 in words is "one billion, three hundred thirty-one million, thirty-one thousand, two hundred seventy-two".