2531405312 has 40 divisors (see below), whose sum is σ = 5062417800. Its totient is φ = 1264564224.

The previous prime is 2531405299. The next prime is 2531405329. The reversal of 2531405312 is 2135041352.

It is a happy number.

It is a super-3 number, since 3×2531405312³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114514 + ... + 1116782.

It is an arithmetic number, because the mean of its divisors is an integer number (126560445).

Almost surely, 2^2531405312 is an apocalyptic number.

It is an amenable number.

2531405312 is a deficient number, since it is larger than the sum of its proper divisors (2531012488).

2531405312 is an equidigital number, since it uses as much as digits as its factorization.

2531405312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4466 (or 4450 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2531405312 is about 50313.0729731349. The cubic root of 2531405312 is about 1362.8683176969.

Adding to 2531405312 its reverse (2135041352), we get a palindrome (4666446664).

The spelling of 2531405312 in words is "two billion, five hundred thirty-one million, four hundred five thousand, three hundred twelve".