400311022140 has 72 divisors (see below), whose sum is σ = 1218567652848. Its totient is φ = 106372385280.

The previous prime is 400311022103. The next prime is 400311022141. The reversal of 400311022140 is 41220113004.

400311022140 is a `hidden beast` number, since 400 + 3 + 1 + 1 + 0 + 221 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400311022141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3878301 + ... + 3980180.

It is an arithmetic number, because the mean of its divisors is an integer number (16924550734).

Almost surely, 2^400311022140 is an apocalyptic number.

It is an amenable number.

400311022140 is an abundant number, since it is smaller than the sum of its proper divisors (818256630708).

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

400311022140 is a wasteful number, since it uses less digits than its factorization.

400311022140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858779 (or 7858774 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 400311022140 its reverse (41220113004), we get a palindrome (441531135144).

The spelling of 400311022140 in words is "four hundred billion, three hundred eleven million, twenty-two thousand, one hundred forty".