2431156340 has 12 divisors (see below), whose sum is σ = 5105428356. Its totient is φ = 972462528.

The previous prime is 2431156339. The next prime is 2431156361. The reversal of 2431156340 is 436511342.

It can be written as a sum of positive squares in 2 ways, for example, as 1914412516 + 516743824 = 43754^2 + 22732^2 .

It is a super-2 number, since 2×2431156340² = 11821042299044391200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60778889 + ... + 60778928.

It is an arithmetic number, because the mean of its divisors is an integer number (425452363).

Almost surely, 2^2431156340 is an apocalyptic number.

2431156340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2431156340 is an abundant number, since it is smaller than the sum of its proper divisors (2674272016).

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

2431156340 is a wasteful number, since it uses less digits than its factorization.

2431156340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121557826 (or 121557824 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2431156340 is about 49306.7575490419. The cubic root of 2431156340 is about 1344.6346423132.

Adding to 2431156340 its reverse (436511342), we get a palindrome (2867667682).

The spelling of 2431156340 in words is "two billion, four hundred thirty-one million, one hundred fifty-six thousand, three hundred forty".