31344406 has 4 divisors (see below), whose sum is σ = 47016612. Its totient is φ = 15672202.

The previous prime is 31344403. The next prime is 31344407. The reversal of 31344406 is 60444313.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60444313 = 1553 ⋅38921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7836100 + ... + 7836103.

It is an arithmetic number, because the mean of its divisors is an integer number (11754153).

Almost surely, 2^31344406 is an apocalyptic number.

31344406 is a deficient number, since it is larger than the sum of its proper divisors (15672206).

31344406 is a wasteful number, since it uses less digits than its factorization.

31344406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15672205.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 31344406 is about 5598.6075054428. The cubic root of 31344406 is about 315.2971278893.

Adding to 31344406 its reverse (60444313), we get a palindrome (91788719).

The spelling of 31344406 in words is "thirty-one million, three hundred forty-four thousand, four hundred six".