31223048 has 8 divisors (see below), whose sum is σ = 58543230. Its totient is φ = 15611520.

The previous prime is 31223047. The next prime is 31223051. The reversal of 31223048 is 84032213.

It can be written as a sum of positive squares in only one way, i.e., 30052324 + 1170724 = 5482^2 + 1082^2 .

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 (31223041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1951433 + ... + 1951448.

Almost surely, 2^31223048 is an apocalyptic number.

It is an amenable number.

31223048 is a deficient number, since it is larger than the sum of its proper divisors (27320182).

31223048 is a wasteful number, since it uses less digits than its factorization.

31223048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3902887 (or 3902883 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 31223048 is about 5587.7587635831. The cubic root of 31223048 is about 314.8896833826.

The spelling of 31223048 in words is "thirty-one million, two hundred twenty-three thousand, forty-eight".