31484671 has 4 divisors (see below), whose sum is σ = 31725144. Its totient is φ = 31244200.

The previous prime is 31484647. The next prime is 31484699. The reversal of 31484671 is 17648413.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17648413 = 139 ⋅126967.

It is a cyclic number.

It is not a de Polignac number, because 31484671 - 2⁷ = 31484543 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 (31484071) 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, 120040 + ... + 120301.

It is an arithmetic number, because the mean of its divisors is an integer number (7931286).

Almost surely, 2^31484671 is an apocalyptic number.

31484671 is a deficient number, since it is larger than the sum of its proper divisors (240473).

31484671 is a wasteful number, since it uses less digits than its factorization.

31484671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240472.

The product of its digits is 16128, while the sum is 34.

The square root of 31484671 is about 5611.1202981223. The cubic root of 31484671 is about 315.7667422180.

The spelling of 31484671 in words is "thirty-one million, four hundred eighty-four thousand, six hundred seventy-one".