312651047 has 4 divisors (see below), whose sum is σ = 317776536. Its totient is φ = 307525560.

The previous prime is 312650993. The next prime is 312651049. The reversal of 312651047 is 740156213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 740156213 = 8231 ⋅89923.

It is a cyclic number.

It is not a de Polignac number, because 312651047 - 2¹⁸ = 312388903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312651049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2562653 + ... + 2562774.

It is an arithmetic number, because the mean of its divisors is an integer number (79444134).

Almost surely, 2^312651047 is an apocalyptic number.

312651047 is a deficient number, since it is larger than the sum of its proper divisors (5125489).

312651047 is an equidigital number, since it uses as much as digits as its factorization.

312651047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125488.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 312651047 is about 17681.9412678586. The cubic root of 312651047 is about 678.7137211079.

The spelling of 312651047 in words is "three hundred twelve million, six hundred fifty-one thousand, forty-seven".