403120213 has 4 divisors (see below), whose sum is σ = 417020940. Its totient is φ = 389219488.

The previous prime is 403120183. The next prime is 403120219. The reversal of 403120213 is 312021304.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 282845124 + 120275089 = 16818^2 + 10967^2 .

It is a cyclic number.

It is not a de Polignac number, because 403120213 - 2⁵ = 403120181 is a prime.

It is a super-4 number, since 4×403120213⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403120219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6950320 + ... + 6950377.

It is an arithmetic number, because the mean of its divisors is an integer number (104255235).

Almost surely, 2^403120213 is an apocalyptic number.

It is an amenable number.

403120213 is a deficient number, since it is larger than the sum of its proper divisors (13900727).

403120213 is a wasteful number, since it uses less digits than its factorization.

403120213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13900726.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 403120213 is about 20077.8537946664. The cubic root of 403120213 is about 738.7171668761.

Adding to 403120213 its reverse (312021304), we get a palindrome (715141517).

The spelling of 403120213 in words is "four hundred three million, one hundred twenty thousand, two hundred thirteen".