2531023140 has 72 divisors (see below), whose sum is σ = 7339812480. Its totient is φ = 651652736.

The previous prime is 2531023133. The next prime is 2531023141. The reversal of 2531023140 is 413201352.

It is not an unprimeable number, because it can be changed into a prime (2531023141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25381 + ... + 75539.

It is an arithmetic number, because the mean of its divisors is an integer number (101941840).

Almost surely, 2^2531023140 is an apocalyptic number.

2531023140 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 2531023140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3669906240).

2531023140 is an abundant number, since it is smaller than the sum of its proper divisors (4808789340).

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

2531023140 is a wasteful number, since it uses less digits than its factorization.

2531023140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50229 (or 50198 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2531023140 is about 50309.2748904215. The cubic root of 2531023140 is about 1362.7997291383.

Adding to 2531023140 its reverse (413201352), we get a palindrome (2944224492).

The spelling of 2531023140 in words is "two billion, five hundred thirty-one million, twenty-three thousand, one hundred forty".