31643468 has 12 divisors (see below), whose sum is σ = 55524840. Its totient is φ = 15779232.

The previous prime is 31643461. The next prime is 31643471. The reversal of 31643468 is 86434613.

It is not an unprimeable number, because it can be changed into a prime (31643461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8921 + ... + 11952.

It is an arithmetic number, because the mean of its divisors is an integer number (4627070).

Almost surely, 2^31643468 is an apocalyptic number.

It is an amenable number.

31643468 is a deficient number, since it is larger than the sum of its proper divisors (23881372).

31643468 is a wasteful number, since it uses less digits than its factorization.

31643468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21256 (or 21254 counting only the distinct ones).

The product of its digits is 41472, while the sum is 35.

The square root of 31643468 is about 5625.2527054347. The cubic root of 31643468 is about 316.2967223069.

The spelling of 31643468 in words is "thirty-one million, six hundred forty-three thousand, four hundred sixty-eight".