400313803 has 4 divisors (see below), whose sum is σ = 404277408. Its totient is φ = 396350200.

The previous prime is 400313747. The next prime is 400313821. The reversal of 400313803 is 308313004.

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

It is a cyclic number.

It is not a de Polignac number, because 400313803 - 2¹³ = 400305611 is a prime.

It is a super-2 number, since 2×400313803² = 320502281744645618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400313843) 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, 1981651 + ... + 1981852.

It is an arithmetic number, because the mean of its divisors is an integer number (101069352).

Almost surely, 2^400313803 is an apocalyptic number.

400313803 is a deficient number, since it is larger than the sum of its proper divisors (3963605).

400313803 is a wasteful number, since it uses less digits than its factorization.

400313803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3963604.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 400313803 is about 20007.8435369732. The cubic root of 400313803 is about 736.9989260540.

Adding to 400313803 its reverse (308313004), we get a palindrome (708626807).

It can be divided in two parts, 40031 and 3803, that added together give a palindrome (43834).

The spelling of 400313803 in words is "four hundred million, three hundred thirteen thousand, eight hundred three".