312401881 has 8 divisors (see below), whose sum is σ = 341135424. Its totient is φ = 283723920.

The previous prime is 312401863. The next prime is 312401899. The reversal of 312401881 is 188104213.

It is an interprime number because it is at equal distance from previous prime (312401863) and next prime (312401899).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312401881 - 2⁷ = 312401753 is a prime.

It is a super-2 number, since 2×312401881² = 195189870504676322, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (312401851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1666 + ... + 25051.

It is an arithmetic number, because the mean of its divisors is an integer number (42641928).

Almost surely, 2^312401881 is an apocalyptic number.

It is an amenable number.

312401881 is a deficient number, since it is larger than the sum of its proper divisors (28733543).

312401881 is a wasteful number, since it uses less digits than its factorization.

312401881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27791.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 312401881 is about 17674.8940873772. The cubic root of 312401881 is about 678.5333737963.

The spelling of 312401881 in words is "three hundred twelve million, four hundred one thousand, eight hundred eighty-one".