312406251109 has 6 divisors (see below), whose sum is σ = 326579692166. Its totient is φ = 298823370120.

The previous prime is 312406251103. The next prime is 312406251119. The reversal of 312406251109 is 901152604213.

It can be written as a sum of positive squares in only one way, i.e., 297886724100 + 14519527009 = 545790^2 + 120497^2 .

It is not a de Polignac number, because 312406251109 - 2¹¹ = 312406249061 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 (312406251103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 295279482 + ... + 295280539.

Almost surely, 2^312406251109 is an apocalyptic number.

It is an amenable number.

312406251109 is a deficient number, since it is larger than the sum of its proper divisors (14173441057).

312406251109 is an equidigital number, since it uses as much as digits as its factorization.

312406251109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590560067 (or 590560044 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 312406251109 in words is "three hundred twelve billion, four hundred six million, two hundred fifty-one thousand, one hundred nine".