312141431 has 4 divisors (see below), whose sum is σ = 356733072. Its totient is φ = 267549792.

The previous prime is 312141391. The next prime is 312141461. The reversal of 312141431 is 134141213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312141431 is a prime.

It is a super-2 number, since 2×312141431² = 194864545893455522, 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 (312141461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22295810 + ... + 22295823.

It is an arithmetic number, because the mean of its divisors is an integer number (89183268).

Almost surely, 2^312141431 is an apocalyptic number.

312141431 is a deficient number, since it is larger than the sum of its proper divisors (44591641).

312141431 is an equidigital number, since it uses as much as digits as its factorization.

312141431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44591640.

The product of its digits is 288, while the sum is 20.

The square root of 312141431 is about 17667.5247558904. The cubic root of 312141431 is about 678.3447565456.

Adding to 312141431 its reverse (134141213), we get a palindrome (446282644).

The spelling of 312141431 in words is "three hundred twelve million, one hundred forty-one thousand, four hundred thirty-one".