31478468 has 24 divisors (see below), whose sum is σ = 63585984. Its totient is φ = 13356000.

The previous prime is 31478429. The next prime is 31478471. The reversal of 31478468 is 86487413.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2738 + ... + 8393.

It is an arithmetic number, because the mean of its divisors is an integer number (2649416).

Almost surely, 2^31478468 is an apocalyptic number.

It is an amenable number.

31478468 is an abundant number, since it is smaller than the sum of its proper divisors (32107516).

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

31478468 is a wasteful number, since it uses less digits than its factorization.

31478468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11243 (or 11241 counting only the distinct ones).

The product of its digits is 129024, while the sum is 41.

The square root of 31478468 is about 5610.5675292255. The cubic root of 31478468 is about 315.7460037689.

The spelling of 31478468 in words is "thirty-one million, four hundred seventy-eight thousand, four hundred sixty-eight".