31003472 has 20 divisors (see below), whose sum is σ = 62007936. Its totient is φ = 15001440.

The previous prime is 31003457. The next prime is 31003477. The reversal of 31003472 is 27430013.

31003472 is an admirable number.

It is a super-2 number, since 2×31003472² = 1922430552109568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31003477) 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 3 ways as a sum of consecutive naturals, for example, 30758 + ... + 31749.

Almost surely, 2^31003472 is an apocalyptic number.

It is an amenable number.

31003472 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

31003472 is a wasteful number, since it uses less digits than its factorization.

31003472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62546 (or 62540 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 31003472 is about 5568.0761489046. The cubic root of 31003472 is about 314.1497926224.

Adding to 31003472 its reverse (27430013), we get a palindrome (58433485).

The spelling of 31003472 in words is "thirty-one million, three thousand, four hundred seventy-two".