400311120212 has 12 divisors (see below), whose sum is σ = 713762280756. Its totient is φ = 196379040000.

The previous prime is 400311120179. The next prime is 400311120221. The reversal of 400311120212 is 212021113004.

It can be written as a sum of positive squares in 2 ways, for example, as 122525201296 + 277785918916 = 350036^2 + 527054^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944129789 + ... + 944130212.

It is an arithmetic number, because the mean of its divisors is an integer number (59480190063).

Almost surely, 2^400311120212 is an apocalyptic number.

It is an amenable number.

400311120212 is a deficient number, since it is larger than the sum of its proper divisors (313451160544).

400311120212 is a wasteful number, since it uses less digits than its factorization.

400311120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888260058 (or 1888260056 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 400311120212 its reverse (212021113004), we get a palindrome (612332233216).

The spelling of 400311120212 in words is "four hundred billion, three hundred eleven million, one hundred twenty thousand, two hundred twelve".