1317228231 has 32 divisors (see below), whose sum is σ = 1985372928. Its totient is φ = 769789440.

The previous prime is 1317228217. The next prime is 1317228259. The reversal of 1317228231 is 1328227131.

It is not a de Polignac number, because 1317228231 - 2⁶ = 1317228167 is a prime.

It is a super-2 number, since 2×1317228231² = 3470180425086778722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317228271) 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, 133200 + ... + 142746.

It is an arithmetic number, because the mean of its divisors is an integer number (62042904).

Almost surely, 2^1317228231 is an apocalyptic number.

1317228231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1317228231 is a deficient number, since it is larger than the sum of its proper divisors (668144697).

1317228231 is a wasteful number, since it uses less digits than its factorization.

1317228231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9711.

The product of its digits is 4032, while the sum is 30.

The square root of 1317228231 is about 36293.6389881202. The cubic root of 1317228231 is about 1096.1929635093.

The spelling of 1317228231 in words is "one billion, three hundred seventeen million, two hundred twenty-eight thousand, two hundred thirty-one".