31434678 has 24 divisors (see below), whose sum is σ = 74300616. Its totient is φ = 9525600.

The previous prime is 31434643. The next prime is 31434691. The reversal of 31434678 is 87643413.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79183 + ... + 79578.

It is an arithmetic number, because the mean of its divisors is an integer number (3095859).

Almost surely, 2^31434678 is an apocalyptic number.

31434678 is an abundant number, since it is smaller than the sum of its proper divisors (42865938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31434678 is a wasteful number, since it uses less digits than its factorization.

31434678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158780 (or 158777 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 31434678 is about 5606.6637138320. The cubic root of 31434678 is about 315.5995233889.

It can be divided in two parts, 3 and 1434678, that multiplied together give a palindrome (4304034).

The spelling of 31434678 in words is "thirty-one million, four hundred thirty-four thousand, six hundred seventy-eight".