31001412 has 96 divisors (see below), whose sum is σ = 82583424. Its totient is φ = 8985600.

The previous prime is 31001393. The next prime is 31001419. The reversal of 31001412 is 21410013.

It is a happy number.

It is a super-2 number, since 2×31001412² = 1922175091987488, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (31001419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236587 + ... + 236717.

It is an arithmetic number, because the mean of its divisors is an integer number (860244).

Almost surely, 2^31001412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31001412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41291712).

31001412 is an abundant number, since it is smaller than the sum of its proper divisors (51582012).

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

31001412 is a wasteful number, since it uses less digits than its factorization.

31001412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229 (or 227 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 31001412 is about 5567.8911627294. The cubic root of 31001412 is about 314.1428346608.

Adding to 31001412 its reverse (21410013), we get a palindrome (52411425).

It can be divided in two parts, 31001 and 412, that added together give a palindrome (31413).

The spelling of 31001412 in words is "thirty-one million, one thousand, four hundred twelve".