31972353 has 12 divisors (see below), whose sum is σ = 49590000. Its totient is φ = 18269832.

The previous prime is 31972351. The next prime is 31972379. The reversal of 31972353 is 35327913.

It is not a de Polignac number, because 31972353 - 2¹ = 31972351 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31972351) 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 11 ways as a sum of consecutive naturals, for example, 108603 + ... + 108896.

It is an arithmetic number, because the mean of its divisors is an integer number (4132500).

Almost surely, 2^31972353 is an apocalyptic number.

It is an amenable number.

31972353 is a deficient number, since it is larger than the sum of its proper divisors (17617647).

31972353 is a wasteful number, since it uses less digits than its factorization.

31972353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217516 (or 217509 counting only the distinct ones).

The product of its digits is 17010, while the sum is 33.

The square root of 31972353 is about 5654.4100488026. The cubic root of 31972353 is about 317.3887530563.

The spelling of 31972353 in words is "thirty-one million, nine hundred seventy-two thousand, three hundred fifty-three".