2531001320 has 32 divisors (see below), whose sum is σ = 5703694920. Its totient is φ = 1010810880.

The previous prime is 2531001311. The next prime is 2531001329. The reversal of 2531001320 is 231001352.

It is an interprime number because it is at equal distance from previous prime (2531001311) and next prime (2531001329).

It can be written as a sum of positive squares in 4 ways, for example, as 2525866564 + 5134756 = 50258^2 + 2266^2 .

It is not an unprimeable number, because it can be changed into a prime (2531001329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23717 + ... + 74996.

Almost surely, 2^2531001320 is an apocalyptic number.

2531001320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531001320 is an abundant number, since it is smaller than the sum of its proper divisors (3172693600).

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

2531001320 is a wasteful number, since it uses less digits than its factorization.

2531001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99365 (or 99361 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2531001320 is about 50309.0580313327. The cubic root of 2531001320 is about 1362.7958128860.

Adding to 2531001320 its reverse (231001352), we get a palindrome (2762002672).

The spelling of 2531001320 in words is "two billion, five hundred thirty-one million, one thousand, three hundred twenty".