303213413405 has 24 divisors (see below), whose sum is σ = 437856396120. Its totient is φ = 200748186240.

The previous prime is 303213413323. The next prime is 303213413407. The reversal of 303213413405 is 504314312303.

It can be written as a sum of positive squares in 4 ways, for example, as 92984744356 + 210228669049 = 304934^2 + 458507^2 .

It is not a de Polignac number, because 303213413405 - 2¹⁸ = 303213151261 is a prime.

It is a super-2 number, since 2×303213413405² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303213413407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21330926 + ... + 21345135.

It is an arithmetic number, because the mean of its divisors is an integer number (18244016505).

Almost surely, 2^303213413405 is an apocalyptic number.

303213413405 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

303213413405 is a deficient number, since it is larger than the sum of its proper divisors (134642982715).

303213413405 is a wasteful number, since it uses less digits than its factorization.

303213413405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42676109 (or 42676102 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

Adding to 303213413405 its reverse (504314312303), we get a palindrome (807527725708).

The spelling of 303213413405 in words is "three hundred three billion, two hundred thirteen million, four hundred thirteen thousand, four hundred five".