31344471 has 12 divisors (see below), whose sum is σ = 47658520. Its totient is φ = 19796400.

The previous prime is 31344457. The next prime is 31344497. The reversal of 31344471 is 17444313.

It is not a de Polignac number, because 31344471 - 2⁶ = 31344407 is a prime.

It is a super-3 number, since 3×31344471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91480 + ... + 91821.

Almost surely, 2^31344471 is an apocalyptic number.

31344471 is a deficient number, since it is larger than the sum of its proper divisors (16314049).

31344471 is a wasteful number, since it uses less digits than its factorization.

31344471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183326 (or 183323 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 31344471 is about 5598.6133104547. The cubic root of 31344471 is about 315.2973458368.

Adding to 31344471 its reverse (17444313), we get a palindrome (48788784).

The spelling of 31344471 in words is "thirty-one million, three hundred forty-four thousand, four hundred seventy-one".