312004511500421 has 2 divisors, whose sum is σ = 312004511500422. Its totient is φ = 312004511500420.

The previous prime is 312004511500351. The next prime is 312004511500537. The reversal of 312004511500421 is 124005115400213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 282242184004225 + 29762327496196 = 16800065^2 + 5455486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312004511500421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312004511509421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156002255750210 + 156002255750211.

It is an arithmetic number, because the mean of its divisors is an integer number (156002255750211).

Almost surely, 2^{312004511500421} is an apocalyptic number.

It is an amenable number.

312004511500421 is a deficient number, since it is larger than the sum of its proper divisors (1).

312004511500421 is an equidigital number, since it uses as much as digits as its factorization.

312004511500421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 312004511500421 its reverse (124005115400213), we get a palindrome (436009626900634).

The spelling of 312004511500421 in words is "three hundred twelve trillion, four billion, five hundred eleven million, five hundred thousand, four hundred twenty-one".