31480452 has 18 divisors (see below), whose sum is σ = 79575678. Its totient is φ = 10493472.

The previous prime is 31480441. The next prime is 31480507. The reversal of 31480452 is 25408413.

It can be written as a sum of positive squares in only one way, i.e., 25160256 + 6320196 = 5016^2 + 2514^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437193 + ... + 437264.

It is an arithmetic number, because the mean of its divisors is an integer number (4420871).

Almost surely, 2^31480452 is an apocalyptic number.

It is an amenable number.

31480452 is an abundant number, since it is smaller than the sum of its proper divisors (48095226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31480452 is a wasteful number, since it uses less digits than its factorization.

31480452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874467 (or 874462 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 31480452 is about 5610.7443356475. The cubic root of 31480452 is about 315.7526371594.

Adding to 31480452 its reverse (25408413), we get a palindrome (56888865).

The spelling of 31480452 in words is "thirty-one million, four hundred eighty thousand, four hundred fifty-two".