31141312 has 14 divisors (see below), whose sum is σ = 61796168. Its totient is φ = 15570624.

The previous prime is 31141303. The next prime is 31141339. The reversal of 31141312 is 21314113.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243228 + ... + 243355.

It is an arithmetic number, because the mean of its divisors is an integer number (4414012).

Almost surely, 2^31141312 is an apocalyptic number.

31141312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31141312 is a deficient number, since it is larger than the sum of its proper divisors (30654856).

31141312 is an equidigital number, since it uses as much as digits as its factorization.

31141312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486595 (or 486585 counting only the distinct ones).

The product of its digits is 72, while the sum is 16.

The square root of 31141312 is about 5580.4401260116. The cubic root of 31141312 is about 314.6146695020.

Adding to 31141312 its reverse (21314113), we get a palindrome (52455425).

The spelling of 31141312 in words is "thirty-one million, one hundred forty-one thousand, three hundred twelve".