31672233 has 6 divisors (see below), whose sum is σ = 45748794. Its totient is φ = 21114816.

The previous prime is 31672231. The next prime is 31672253. The reversal of 31672233 is 33227613.

It can be written as a sum of positive squares in only one way, i.e., 31505769 + 166464 = 5613^2 + 408^2 .

It is not a de Polignac number, because 31672233 - 2¹ = 31672231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31672197 and 31672206.

It is not an unprimeable number, because it can be changed into a prime (31672231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1759560 + ... + 1759577.

It is an arithmetic number, because the mean of its divisors is an integer number (7624799).

Almost surely, 2^31672233 is an apocalyptic number.

It is an amenable number.

31672233 is a deficient number, since it is larger than the sum of its proper divisors (14076561).

31672233 is a wasteful number, since it uses less digits than its factorization.

31672233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519143 (or 3519140 counting only the distinct ones).

The product of its digits is 4536, while the sum is 27.

The square root of 31672233 is about 5627.8088986745. The cubic root of 31672233 is about 316.3925348111.

Adding to 31672233 its reverse (33227613), we get a palindrome (64899846).

The spelling of 31672233 in words is "thirty-one million, six hundred seventy-two thousand, two hundred thirty-three".