1043320413 has 16 divisors (see below), whose sum is σ = 1512734400. Its totient is φ = 636938496.

The previous prime is 1043320409. The next prime is 1043320433. The reversal of 1043320413 is 3140233401.

It is not a de Polignac number, because 1043320413 - 2² = 1043320409 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043320413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1043320403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274563 + ... + 278336.

It is an arithmetic number, because the mean of its divisors is an integer number (94545900).

Almost surely, 2^1043320413 is an apocalyptic number.

It is an amenable number.

1043320413 is a deficient number, since it is larger than the sum of its proper divisors (469413987).

1043320413 is a wasteful number, since it uses less digits than its factorization.

1043320413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552956.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1043320413 is about 32300.4707860427. The cubic root of 1043320413 is about 1014.2364979841.

Adding to 1043320413 its reverse (3140233401), we get a palindrome (4183553814).

The spelling of 1043320413 in words is "one billion, forty-three million, three hundred twenty thousand, four hundred thirteen".