312450251551 has 2 divisors, whose sum is σ = 312450251552. Its totient is φ = 312450251550.

The previous prime is 312450251497. The next prime is 312450251647. The reversal of 312450251551 is 155152054213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 312450251551 - 2¹³ = 312450243359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312450251251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156225125775 + 156225125776.

It is an arithmetic number, because the mean of its divisors is an integer number (156225125776).

Almost surely, 2^312450251551 is an apocalyptic number.

312450251551 is a deficient number, since it is larger than the sum of its proper divisors (1).

312450251551 is an equidigital number, since it uses as much as digits as its factorization.

312450251551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 34.

It can be divided in two parts, 312450 and 251551, that added together give a square (564001 = 751²).

The spelling of 312450251551 in words is "three hundred twelve billion, four hundred fifty million, two hundred fifty-one thousand, five hundred fifty-one".