31240052 has 12 divisors (see below), whose sum is σ = 55566756. Its totient is φ = 15363840.

The previous prime is 31240043. The next prime is 31240061. The reversal of 31240052 is 25004213.

It is an interprime number because it is at equal distance from previous prime (31240043) and next prime (31240061).

It can be written as a sum of positive squares in 2 ways, for example, as 6280036 + 24960016 = 2506^2 + 4996^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31240052.

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, 63773 + ... + 64260.

It is an arithmetic number, because the mean of its divisors is an integer number (4630563).

Almost surely, 2^31240052 is an apocalyptic number.

It is an amenable number.

31240052 is a deficient number, since it is larger than the sum of its proper divisors (24326704).

31240052 is a wasteful number, since it uses less digits than its factorization.

31240052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128098 (or 128096 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 31240052 is about 5589.2800967566. The cubic root of 31240052 is about 314.9468357409.

Adding to 31240052 its reverse (25004213), we get a palindrome (56244265).

The spelling of 31240052 in words is "thirty-one million, two hundred forty thousand, fifty-two".