312513451 has 2 divisors, whose sum is σ = 312513452. Its totient is φ = 312513450.

The previous prime is 312513391. The next prime is 312513473. The reversal of 312513451 is 154315213.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312513451 is a prime.

It is not a weakly prime, because it can be changed into another prime (312523451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156256725 + 156256726.

It is an arithmetic number, because the mean of its divisors is an integer number (156256726).

Almost surely, 2^312513451 is an apocalyptic number.

312513451 is a deficient number, since it is larger than the sum of its proper divisors (1).

312513451 is an equidigital number, since it uses as much as digits as its factorization.

312513451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1800, while the sum is 25.

The square root of 312513451 is about 17678.0499773024. The cubic root of 312513451 is about 678.6141404441.

Adding to 312513451 its reverse (154315213), we get a palindrome (466828664).

The spelling of 312513451 in words is "three hundred twelve million, five hundred thirteen thousand, four hundred fifty-one".