31672449 has 24 divisors (see below), whose sum is σ = 50256960. Its totient is φ = 19131552.

The previous prime is 31672447. The next prime is 31672463. The reversal of 31672449 is 94427613.

It is not a de Polignac number, because 31672449 - 2¹ = 31672447 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31672447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94 + ... + 7959.

It is an arithmetic number, because the mean of its divisors is an integer number (2094040).

Almost surely, 2^31672449 is an apocalyptic number.

It is an amenable number.

31672449 is a deficient number, since it is larger than the sum of its proper divisors (18584511).

31672449 is a wasteful number, since it uses less digits than its factorization.

31672449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8101 (or 8098 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 31672449 is about 5627.8280890589. The cubic root of 31672449 is about 316.3932540597.

The spelling of 31672449 in words is "thirty-one million, six hundred seventy-two thousand, four hundred forty-nine".