400405031140 has 48 divisors (see below), whose sum is σ = 845474886144. Its totient is φ = 159283324800.

The previous prime is 400405031113. The next prime is 400405031203. The reversal of 400405031140 is 41130504004.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2952625 + ... + 3085255.

It is an arithmetic number, because the mean of its divisors is an integer number (17614060128).

Almost surely, 2^400405031140 is an apocalyptic number.

It is an amenable number.

400405031140 is an abundant number, since it is smaller than the sum of its proper divisors (445069855004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400405031140 is a wasteful number, since it uses less digits than its factorization.

400405031140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133468 (or 133466 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 400405031140 its reverse (41130504004), we get a palindrome (441535535144).

The spelling of 400405031140 in words is "four hundred billion, four hundred five million, thirty-one thousand, one hundred forty".