400315453723 has 4 divisors (see below), whose sum is σ = 413228855488. Its totient is φ = 387402051960.

The previous prime is 400315453697. The next prime is 400315453751. The reversal of 400315453723 is 327354513004.

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 400315453723 - 2⁹ = 400315453211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400315453523) 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, 6456700836 + ... + 6456700897.

It is an arithmetic number, because the mean of its divisors is an integer number (103307213872).

Almost surely, 2^400315453723 is an apocalyptic number.

400315453723 is a deficient number, since it is larger than the sum of its proper divisors (12913401765).

400315453723 is a wasteful number, since it uses less digits than its factorization.

400315453723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12913401764.

The product of its (nonzero) digits is 151200, while the sum is 37.

Adding to 400315453723 its reverse (327354513004), we get a palindrome (727669966727).

The spelling of 400315453723 in words is "four hundred billion, three hundred fifteen million, four hundred fifty-three thousand, seven hundred twenty-three".