1521354313 has 2 divisors, whose sum is σ = 1521354314. Its totient is φ = 1521354312.

The previous prime is 1521354299. The next prime is 1521354337. The reversal of 1521354313 is 3134531251.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1236014649 + 285339664 = 35157^2 + 16892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1521354313 - 2¹³ = 1521346121 is a prime.

It is not a weakly prime, because it can be changed into another prime (1521354013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760677156 + 760677157.

It is an arithmetic number, because the mean of its divisors is an integer number (760677157).

Almost surely, 2^1521354313 is an apocalyptic number.

It is an amenable number.

1521354313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1521354313 is an equidigital number, since it uses as much as digits as its factorization.

1521354313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 28.

The square root of 1521354313 is about 39004.5422098504. The cubic root of 1521354313 is about 1150.1207971408.

Adding to 1521354313 its reverse (3134531251), we get a palindrome (4655885564).

The spelling of 1521354313 in words is "one billion, five hundred twenty-one million, three hundred fifty-four thousand, three hundred thirteen".