31375048 has 8 divisors (see below), whose sum is σ = 58828230. Its totient is φ = 15687520.

The previous prime is 31375039. The next prime is 31375049. The reversal of 31375048 is 84057313.

It can be written as a sum of positive squares in only one way, i.e., 20629764 + 10745284 = 4542^2 + 3278^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (31375049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1960933 + ... + 1960948.

Almost surely, 2^31375048 is an apocalyptic number.

It is an amenable number.

31375048 is a deficient number, since it is larger than the sum of its proper divisors (27453182).

31375048 is a wasteful number, since it uses less digits than its factorization.

31375048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3921887 (or 3921883 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 31375048 is about 5601.3434102901. The cubic root of 31375048 is about 315.3998382744.

The spelling of 31375048 in words is "thirty-one million, three hundred seventy-five thousand, forty-eight".