312201440122331 has 16 divisors (see below), whose sum is σ = 323642820503520. Its totient is φ = 300918259491840.

The previous prime is 312201440122309. The next prime is 312201440122343. The reversal of 312201440122331 is 133221044102213.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312201440122331 is a prime.

It is a super-2 number, since 2×312201440122331² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 312201440122294 and 312201440122303.

It is not an unprimeable number, because it can be changed into a prime (312201440022331) 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, 191122985 + ... + 192749573.

It is an arithmetic number, because the mean of its divisors is an integer number (20227676281470).

Almost surely, 2^{312201440122331} is an apocalyptic number.

312201440122331 is a deficient number, since it is larger than the sum of its proper divisors (11441380381189).

312201440122331 is a wasteful number, since it uses less digits than its factorization.

312201440122331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675214.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 312201440122331 its reverse (133221044102213), we get a palindrome (445422484224544).

The spelling of 312201440122331 in words is "three hundred twelve trillion, two hundred one billion, four hundred forty million, one hundred twenty-two thousand, three hundred thirty-one".