31456532 has 12 divisors (see below), whose sum is σ = 56947380. Its totient is φ = 15185856.

The previous prime is 31456531. The next prime is 31456547. The reversal of 31456532 is 23565413.

It can be written as a sum of positive squares in 2 ways, for example, as 20394256 + 11062276 = 4516^2 + 3326^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 31456495 and 31456504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31456531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135473 + ... + 135704.

It is an arithmetic number, because the mean of its divisors is an integer number (4745615).

Almost surely, 2^31456532 is an apocalyptic number.

It is an amenable number.

31456532 is a deficient number, since it is larger than the sum of its proper divisors (25490848).

31456532 is a wasteful number, since it uses less digits than its factorization.

31456532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271210 (or 271208 counting only the distinct ones).

The product of its digits is 10800, while the sum is 29.

The square root of 31456532 is about 5608.6123060878. The cubic root of 31456532 is about 315.6726434238.

The spelling of 31456532 in words is "thirty-one million, four hundred fifty-six thousand, five hundred thirty-two".