312201112061 has 2 divisors, whose sum is σ = 312201112062. Its totient is φ = 312201112060.

The previous prime is 312201111979. The next prime is 312201112103. The reversal of 312201112061 is 160211102213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198105108100 + 114096003961 = 445090^2 + 337781^2 .

It is a cyclic number.

It is not a de Polignac number, because 312201112061 - 2³⁴ = 295021242877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312201114061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156100556030 + 156100556031.

It is an arithmetic number, because the mean of its divisors is an integer number (156100556031).

Almost surely, 2^312201112061 is an apocalyptic number.

It is an amenable number.

312201112061 is a deficient number, since it is larger than the sum of its proper divisors (1).

312201112061 is an equidigital number, since it uses as much as digits as its factorization.

312201112061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 312201112061 its reverse (160211102213), we get a palindrome (472412214274).

The spelling of 312201112061 in words is "three hundred twelve billion, two hundred one million, one hundred twelve thousand, sixty-one".