1210520413 has 2 divisors, whose sum is σ = 1210520414. Its totient is φ = 1210520412.

The previous prime is 1210520401. The next prime is 1210520431. The reversal of 1210520413 is 3140250121.

Together with next prime (1210520431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099386649 + 111133764 = 33157^2 + 10542^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210520413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210520483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605260206 + 605260207.

It is an arithmetic number, because the mean of its divisors is an integer number (605260207).

Almost surely, 2^1210520413 is an apocalyptic number.

It is an amenable number.

1210520413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210520413 is an equidigital number, since it uses as much as digits as its factorization.

1210520413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1210520413 is about 34792.5338686334. The cubic root of 1210520413 is about 1065.7549843624.

Adding to 1210520413 its reverse (3140250121), we get a palindrome (4350770534).

The spelling of 1210520413 in words is "one billion, two hundred ten million, five hundred twenty thousand, four hundred thirteen".