400347134331 has 16 divisors (see below), whose sum is σ = 539106796800. Its totient is φ = 264254301920.

The previous prime is 400347134323. The next prime is 400347134353. The reversal of 400347134331 is 133431743004.

It is a cyclic number.

It is not a de Polignac number, because 400347134331 - 2³ = 400347134323 is a prime.

It is a super-2 number, since 2×400347134331² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 400347134292 and 400347134301.

It is not an unprimeable number, because it can be changed into a prime (400347134431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1300905 + ... + 1578938.

It is an arithmetic number, because the mean of its divisors is an integer number (33694174800).

Almost surely, 2^400347134331 is an apocalyptic number.

400347134331 is a deficient number, since it is larger than the sum of its proper divisors (138759662469).

400347134331 is a wasteful number, since it uses less digits than its factorization.

400347134331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2880306.

The product of its (nonzero) digits is 36288, while the sum is 33.

Adding to 400347134331 its reverse (133431743004), we get a palindrome (533778877335).

The spelling of 400347134331 in words is "four hundred billion, three hundred forty-seven million, one hundred thirty-four thousand, three hundred thirty-one".