2521131316 has 36 divisors (see below), whose sum is σ = 4853991940. Its totient is φ = 1144915200.

The previous prime is 2521131313. The next prime is 2521131329. The reversal of 2521131316 is 6131311252.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 423124900 + 2098006416 = 20570^2 + 45804^2 .

It is a super-2 number, since 2×2521131316² = 12712206225031783712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2521131311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 806236 + ... + 809356.

Almost surely, 2^2521131316 is an apocalyptic number.

It is an amenable number.

2521131316 is a deficient number, since it is larger than the sum of its proper divisors (2332860624).

2521131316 is a wasteful number, since it uses less digits than its factorization.

2521131316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816 (or 4803 counting only the distinct ones).

The product of its digits is 1080, while the sum is 25.

The square root of 2521131316 is about 50210.8685047371. The cubic root of 2521131316 is about 1361.0220323616.

Adding to 2521131316 its reverse (6131311252), we get a palindrome (8652442568).

The spelling of 2521131316 in words is "two billion, five hundred twenty-one million, one hundred thirty-one thousand, three hundred sixteen".