2531304032340 has 192 divisors, whose sum is σ = 7326468898560. Its totient is φ = 652591779840.

The previous prime is 2531304032339. The next prime is 2531304032423. The reversal of 2531304032340 is 432304031352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 2531304032298 and 2531304032307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 146368734 + ... + 146386026.

It is an arithmetic number, because the mean of its divisors is an integer number (38158692180).

Almost surely, 2^{2531304032340} is an apocalyptic number.

2531304032340 is a gapful number since it is divisible by the number (20) 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 2531304032340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3663234449280).

2531304032340 is an abundant number, since it is smaller than the sum of its proper divisors (4795164866220).

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

2531304032340 is a wasteful number, since it uses less digits than its factorization.

2531304032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17882 (or 17880 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 30.

Adding to 2531304032340 its reverse (432304031352), we get a palindrome (2963608063692).

The spelling of 2531304032340 in words is "two trillion, five hundred thirty-one billion, three hundred four million, thirty-two thousand, three hundred forty".