400231851 has 8 divisors (see below), whose sum is σ = 533736000. Its totient is φ = 266774472.

The previous prime is 400231841. The next prime is 400231879. The reversal of 400231851 is 158132004.

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

It is not a de Polignac number, because 400231851 - 2⁹ = 400231339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (400231841) 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, 22900 + ... + 36398.

It is an arithmetic number, because the mean of its divisors is an integer number (66717000).

Almost surely, 2^400231851 is an apocalyptic number.

400231851 is a deficient number, since it is larger than the sum of its proper divisors (133504149).

400231851 is a wasteful number, since it uses less digits than its factorization.

400231851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23385.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 400231851 is about 20005.7954353232. The cubic root of 400231851 is about 736.9486299633.

Adding to 400231851 its reverse (158132004), we get a palindrome (558363855).

It can be divided in two parts, 4002 and 31851, that added together give a palindrome (35853).

The spelling of 400231851 in words is "four hundred million, two hundred thirty-one thousand, eight hundred fifty-one".