2531051213 has 8 divisors (see below), whose sum is σ = 2565367320. Its totient is φ = 2496916800.

The previous prime is 2531051209. The next prime is 2531051221. The reversal of 2531051213 is 3121501352.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 797328169 + 1733723044 = 28237^2 + 41638^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2531051213 - 2² = 2531051209 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2531051293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17258 + ... + 73211.

It is an arithmetic number, because the mean of its divisors is an integer number (320670915).

Almost surely, 2^2531051213 is an apocalyptic number.

It is an amenable number.

2531051213 is a deficient number, since it is larger than the sum of its proper divisors (34316107).

2531051213 is a wasteful number, since it uses less digits than its factorization.

2531051213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90847.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 2531051213 is about 50309.5538938679. The cubic root of 2531051213 is about 1362.8047676456.

Adding to 2531051213 its reverse (3121501352), we get a palindrome (5652552565).

The spelling of 2531051213 in words is "two billion, five hundred thirty-one million, fifty-one thousand, two hundred thirteen".