31341312 has 108 divisors (see below), whose sum is σ = 92257984. Its totient is φ = 10229760.

The previous prime is 31341301. The next prime is 31341361. The reversal of 31341312 is 21314313.

31341312 is a `hidden beast` number, since 313 + 41 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140433 + ... + 140655.

Almost surely, 2^31341312 is an apocalyptic number.

31341312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31341312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46128992).

31341312 is an abundant number, since it is smaller than the sum of its proper divisors (60916672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31341312 is a wasteful number, since it uses less digits than its factorization.

31341312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 289 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 31341312 is about 5598.3311799142. The cubic root of 31341312 is about 315.2867532427.

Adding to 31341312 its reverse (21314313), we get a palindrome (52655625).

The spelling of 31341312 in words is "thirty-one million, three hundred forty-one thousand, three hundred twelve".