312500001 has 16 divisors (see below), whose sum is σ = 481284288. Its totient is φ = 178252800.

The previous prime is 312499987. The next prime is 312500017. The reversal of 312500001 is 100005213.

It is a Cunningham number, because it is equal to 50⁵+1.

It is not a de Polignac number, because 312500001 - 2¹⁴ = 312483617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312500001.

It is not an unprimeable number, because it can be changed into a prime (312500081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277960 + ... + 279081.

It is an arithmetic number, because the mean of its divisors is an integer number (30080268).

Almost surely, 2^312500001 is an apocalyptic number.

It is an amenable number.

312500001 is a deficient number, since it is larger than the sum of its proper divisors (168784287).

312500001 is a wasteful number, since it uses less digits than its factorization.

312500001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557072.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 312500001 is about 17677.6695579480. The cubic root of 312500001 is about 678.6044048726.

Adding to 312500001 its reverse (100005213), we get a palindrome (412505214).

The spelling of 312500001 in words is "three hundred twelve million, five hundred thousand, one".