31487468 has 24 divisors (see below), whose sum is σ = 59308704. Its totient is φ = 14572800.

The previous prime is 31487447. The next prime is 31487471. The reversal of 31487468 is 86478413.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

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, 353 + ... + 7943.

It is an arithmetic number, because the mean of its divisors is an integer number (2471196).

Almost surely, 2^31487468 is an apocalyptic number.

It is an amenable number.

31487468 is a deficient number, since it is larger than the sum of its proper divisors (27821236).

31487468 is a wasteful number, since it uses less digits than its factorization.

31487468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7673 (or 7671 counting only the distinct ones).

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

The square root of 31487468 is about 5611.3695298029. The cubic root of 31487468 is about 315.7760925188.

The spelling of 31487468 in words is "thirty-one million, four hundred eighty-seven thousand, four hundred sixty-eight".