312202144223531 has 2 divisors, whose sum is σ = 312202144223532. Its totient is φ = 312202144223530.

The previous prime is 312202144223471. The next prime is 312202144223561. The reversal of 312202144223531 is 135322441202213.

It is a strong prime.

It is an emirp because it is prime and its reverse (135322441202213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312202144223531 is a prime.

It is a super-2 number, since 2×312202144223531² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 312202144223491 and 312202144223500.

It is not a weakly prime, because it can be changed into another prime (312202144223561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156101072111765 + 156101072111766.

It is an arithmetic number, because the mean of its divisors is an integer number (156101072111766).

Almost surely, 2^{312202144223531} is an apocalyptic number.

312202144223531 is a deficient number, since it is larger than the sum of its proper divisors (1).

312202144223531 is an equidigital number, since it uses as much as digits as its factorization.

312202144223531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 35.

Adding to 312202144223531 its reverse (135322441202213), we get a palindrome (447524585425744).

The spelling of 312202144223531 in words is "three hundred twelve trillion, two hundred two billion, one hundred forty-four million, two hundred twenty-three thousand, five hundred thirty-one".