400342303 has 8 divisors (see below), whose sum is σ = 416321280. Its totient is φ = 384508320.

The previous prime is 400342279. The next prime is 400342309. The reversal of 400342303 is 303243004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400342303 - 2⁹ = 400341791 is a prime.

It is a super-3 number, since 3×400342303³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400342309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30600 + ... + 41677.

It is an arithmetic number, because the mean of its divisors is an integer number (52040160).

Almost surely, 2^400342303 is an apocalyptic number.

400342303 is a deficient number, since it is larger than the sum of its proper divisors (15978977).

400342303 is a wasteful number, since it uses less digits than its factorization.

400342303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72497.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 400342303 is about 20008.5557449807. Note that the first 3 decimals coincide. The cubic root of 400342303 is about 737.0164156424.

Adding to 400342303 its reverse (303243004), we get a palindrome (703585307).

The spelling of 400342303 in words is "four hundred million, three hundred forty-two thousand, three hundred three".