2531444340 has 48 divisors (see below), whose sum is σ = 7153090560. Its totient is φ = 668856960.

The previous prime is 2531444323. The next prime is 2531444389. The reversal of 2531444340 is 434441352.

2531444340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 2531444298 and 2531444307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186996 + ... + 200075.

It is an arithmetic number, because the mean of its divisors is an integer number (149022720).

Almost surely, 2^2531444340 is an apocalyptic number.

2531444340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2531444340 is an abundant number, since it is smaller than the sum of its proper divisors (4621646220).

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

2531444340 is a wasteful number, since it uses less digits than its factorization.

2531444340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387192 (or 387190 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 2531444340 is about 50313.4608231237. The cubic root of 2531444340 is about 1362.8753216788.

Adding to 2531444340 its reverse (434441352), we get a palindrome (2965885692).

The spelling of 2531444340 in words is "two billion, five hundred thirty-one million, four hundred forty-four thousand, three hundred forty".