312552381 has 4 divisors (see below), whose sum is σ = 416736512. Its totient is φ = 208368252.

The previous prime is 312552341. The next prime is 312552403. The reversal of 312552381 is 183255213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 312552381 - 2¹⁷ = 312421309 is a prime.

It is a super-2 number, since 2×312552381² = 195377981737538322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312552311) 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, 52092061 + ... + 52092066.

It is an arithmetic number, because the mean of its divisors is an integer number (104184128).

Almost surely, 2^312552381 is an apocalyptic number.

It is an amenable number.

312552381 is a deficient number, since it is larger than the sum of its proper divisors (104184131).

312552381 is a wasteful number, since it uses less digits than its factorization.

312552381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104184130.

The product of its digits is 7200, while the sum is 30.

The square root of 312552381 is about 17679.1510259967. The cubic root of 312552381 is about 678.6423177396.

The spelling of 312552381 in words is "three hundred twelve million, five hundred fifty-two thousand, three hundred eighty-one".