1317207620 has 96 divisors (see below), whose sum is σ = 2894766336. Its totient is φ = 503193600.

The previous prime is 1317207611. The next prime is 1317207629. The reversal of 1317207620 is 267027131.

It is an interprime number because it is at equal distance from previous prime (1317207611) and next prime (1317207629).

It is not an unprimeable number, because it can be changed into a prime (1317207629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10054955 + ... + 10055085.

It is an arithmetic number, because the mean of its divisors is an integer number (30153816).

Almost surely, 2^1317207620 is an apocalyptic number.

1317207620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1317207620 is an abundant number, since it is smaller than the sum of its proper divisors (1577558716).

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

1317207620 is a wasteful number, since it uses less digits than its factorization.

1317207620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1317207620 is about 36293.3550391804. The cubic root of 1317207620 is about 1096.1872460109.

The spelling of 1317207620 in words is "one billion, three hundred seventeen million, two hundred seven thousand, six hundred twenty".