2456531213 has 8 divisors (see below), whose sum is σ = 2475495096. Its totient is φ = 2437632000.

The previous prime is 2456531197. The next prime is 2456531221. The reversal of 2456531213 is 3121356542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1039611049 + 1416920164 = 32243^2 + 37642^2 .

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 2456531213 - 2⁴ = 2456531197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2456531213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2456531513) 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, 61523 + ... + 93263.

It is an arithmetic number, because the mean of its divisors is an integer number (309436887).

Almost surely, 2^2456531213 is an apocalyptic number.

It is an amenable number.

2456531213 is a deficient number, since it is larger than the sum of its proper divisors (18963883).

2456531213 is a wasteful number, since it uses less digits than its factorization.

2456531213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32335.

The product of its digits is 21600, while the sum is 32.

The square root of 2456531213 is about 49563.4059866753. The cubic root of 2456531213 is about 1349.2966089756.

Adding to 2456531213 its reverse (3121356542), we get a palindrome (5577887755).

The spelling of 2456531213 in words is "two billion, four hundred fifty-six million, five hundred thirty-one thousand, two hundred thirteen".