400347134371 has 16 divisors (see below), whose sum is σ = 436250599200. Its totient is φ = 365944981248.

The previous prime is 400347134353. The next prime is 400347134431. The reversal of 400347134371 is 173431743004.

It is a cyclic number.

It is not a de Polignac number, because 400347134371 - 2²⁷ = 400212916643 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400347134371.

It is not an unprimeable number, because it can be changed into a prime (400347138371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 550575 + ... + 1050631.

It is an arithmetic number, because the mean of its divisors is an integer number (27265662450).

Almost surely, 2^400347134371 is an apocalyptic number.

400347134371 is a deficient number, since it is larger than the sum of its proper divisors (35903464829).

400347134371 is a wasteful number, since it uses less digits than its factorization.

400347134371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501558.

The product of its (nonzero) digits is 84672, while the sum is 37.

Adding to 400347134371 its reverse (173431743004), we get a palindrome (573778877375).

The spelling of 400347134371 in words is "four hundred billion, three hundred forty-seven million, one hundred thirty-four thousand, three hundred seventy-one".