312534381 has 4 divisors (see below), whose sum is σ = 416712512. Its totient is φ = 208356252.

The previous prime is 312534379. The next prime is 312534413. The reversal of 312534381 is 183435213.

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 312534381 - 2¹ = 312534379 is a prime.

It is a super-2 number, since 2×312534381² = 195355478614106322, 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 (312534311) 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, 52089061 + ... + 52089066.

It is an arithmetic number, because the mean of its divisors is an integer number (104178128).

Almost surely, 2^312534381 is an apocalyptic number.

It is an amenable number.

312534381 is a deficient number, since it is larger than the sum of its proper divisors (104178131).

312534381 is a wasteful number, since it uses less digits than its factorization.

312534381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104178130.

The product of its digits is 8640, while the sum is 30.

The square root of 312534381 is about 17678.6419444481. The cubic root of 312534381 is about 678.6292897407.

Adding to 312534381 its reverse (183435213), we get a palindrome (495969594).

The spelling of 312534381 in words is "three hundred twelve million, five hundred thirty-four thousand, three hundred eighty-one".