1231316000 has 96 divisors (see below), whose sum is σ = 3036262320. Its totient is φ = 490752000.

The previous prime is 1231315999. The next prime is 1231316003. The reversal of 1231316000 is 6131321.

It can be written as a sum of positive squares in 8 ways, for example, as 3794704 + 1227521296 = 1948^2 + 35036^2 .

It is a super-2 number, since 2×1231316000² = 3032278183712000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231316000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231316003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2163716 + ... + 2164284.

Almost surely, 2^1231316000 is an apocalyptic number.

1231316000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231316000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1518131160).

1231316000 is an abundant number, since it is smaller than the sum of its proper divisors (1804946320).

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

1231316000 is an equidigital number, since it uses as much as digits as its factorization.

1231316000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1231316000 is about 35090.1125675025. The cubic root of 1231316000 is about 1071.8232518430.

Adding to 1231316000 its reverse (6131321), we get a palindrome (1237447321).

The spelling of 1231316000 in words is "one billion, two hundred thirty-one million, three hundred sixteen thousand".