1317273372 has 54 divisors (see below), whose sum is σ = 3351420072. Its totient is φ = 436248864.

The previous prime is 1317273367. The next prime is 1317273403. The reversal of 1317273372 is 2733727131.

1317273372 is a `hidden beast` number, since 1 + 3 + 17 + 273 + 372 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3531378 + ... + 3531750.

Almost surely, 2^1317273372 is an apocalyptic number.

1317273372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1317273372 is an abundant number, since it is smaller than the sum of its proper divisors (2034146700).

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

1317273372 is a wasteful number, since it uses less digits than its factorization.

1317273372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019 (or 641 counting only the distinct ones).

The product of its digits is 37044, while the sum is 36.

The square root of 1317273372 is about 36294.2608686277. The cubic root of 1317273372 is about 1096.2054854298.

The spelling of 1317273372 in words is "one billion, three hundred seventeen million, two hundred seventy-three thousand, three hundred seventy-two".