31214036 has 48 divisors (see below), whose sum is σ = 68597760. Its totient is φ = 12117600.

The previous prime is 31214033. The next prime is 31214041. The reversal of 31214036 is 63041213.

It is a junction number, because it is equal to n+sod(n) for n = 31213999 and 31214017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31214033) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 10961 + ... + 13511.

It is an arithmetic number, because the mean of its divisors is an integer number (1429120).

Almost surely, 2^31214036 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 31214036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34298880).

31214036 is an abundant number, since it is smaller than the sum of its proper divisors (37383724).

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

31214036 is a wasteful number, since it uses less digits than its factorization.

31214036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604 (or 2602 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 31214036 is about 5586.9522997785. The cubic root of 31214036 is about 314.8593846228.

Adding to 31214036 its reverse (63041213), we get a palindrome (94255249).

The spelling of 31214036 in words is "thirty-one million, two hundred fourteen thousand, thirty-six".