312212322430387 has 2 divisors, whose sum is σ = 312212322430388. Its totient is φ = 312212322430386.

The previous prime is 312212322430223. The next prime is 312212322430409. The reversal of 312212322430387 is 783034223212213.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 312212322430387 - 2²³ = 312212314041779 is a prime.

It is not a weakly prime, because it can be changed into another prime (312212322430087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156106161215193 + 156106161215194.

It is an arithmetic number, because the mean of its divisors is an integer number (156106161215194).

Almost surely, 2^{312212322430387} is an apocalyptic number.

312212322430387 is a deficient number, since it is larger than the sum of its proper divisors (1).

312212322430387 is an equidigital number, since it uses as much as digits as its factorization.

312212322430387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 312212322430387 in words is "three hundred twelve trillion, two hundred twelve billion, three hundred twenty-two million, four hundred thirty thousand, three hundred eighty-seven".