31438448 has 20 divisors (see below), whose sum is σ = 61020648. Its totient is φ = 15691200.

The previous prime is 31438411. The next prime is 31438471. The reversal of 31438448 is 84483413.

It is a Cunningham number, because it is equal to 5607²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9815 + ... + 12617.

Almost surely, 2^31438448 is an apocalyptic number.

It is an amenable number.

31438448 is a deficient number, since it is larger than the sum of its proper divisors (29582200).

31438448 is a wasteful number, since it uses less digits than its factorization.

31438448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3512 (or 3506 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 31438448 is about 5606.9999108258. Note that the first 4 decimals coincide. The cubic root of 31438448 is about 315.6121396322.

It can be divided in two parts, 314384 and 48, that added together give a cube (314432 = 68³).

The spelling of 31438448 in words is "thirty-one million, four hundred thirty-eight thousand, four hundred forty-eight".