31484693 has 4 divisors (see below), whose sum is σ = 31505760. Its totient is φ = 31463628.

The previous prime is 31484647. The next prime is 31484699. The reversal of 31484693 is 39648413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31484693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31484699) 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, 8105 + ... + 11342.

It is an arithmetic number, because the mean of its divisors is an integer number (7876440).

Almost surely, 2^31484693 is an apocalyptic number.

It is an amenable number.

31484693 is a deficient number, since it is larger than the sum of its proper divisors (21067).

31484693 is a wasteful number, since it uses less digits than its factorization.

31484693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21066.

The product of its digits is 62208, while the sum is 38.

The square root of 31484693 is about 5611.1222585148. The cubic root of 31484693 is about 315.7668157657.

The spelling of 31484693 in words is "thirty-one million, four hundred eighty-four thousand, six hundred ninety-three".