400120333231 has 2 divisors, whose sum is σ = 400120333232. Its totient is φ = 400120333230.

The previous prime is 400120333169. The next prime is 400120333253. The reversal of 400120333231 is 132333021004.

It is an a-pointer prime, because the next prime (400120333253) can be obtained adding 400120333231 to its sum of digits (22).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400120333231 is a prime.

It is a super-3 number, since 3×400120333231³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400120333531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200060166615 + 200060166616.

It is an arithmetic number, because the mean of its divisors is an integer number (200060166616).

Almost surely, 2^400120333231 is an apocalyptic number.

400120333231 is a deficient number, since it is larger than the sum of its proper divisors (1).

400120333231 is an equidigital number, since it uses as much as digits as its factorization.

400120333231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 400120333231 its reverse (132333021004), we get a palindrome (532453354235).

The spelling of 400120333231 in words is "four hundred billion, one hundred twenty million, three hundred thirty-three thousand, two hundred thirty-one".