31250000315 has 4 divisors (see below), whose sum is σ = 37500000384. Its totient is φ = 25000000248.

The previous prime is 31250000269. The next prime is 31250000317. The reversal of 31250000315 is 51300005213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31250000315 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31250000317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3125000027 + ... + 3125000036.

It is an arithmetic number, because the mean of its divisors is an integer number (9375000096).

Almost surely, 2^31250000315 is an apocalyptic number.

31250000315 is a deficient number, since it is larger than the sum of its proper divisors (6250000069).

31250000315 is an equidigital number, since it uses as much as digits as its factorization.

31250000315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6250000068.

The product of its (nonzero) digits is 450, while the sum is 20.

Adding to 31250000315 its reverse (51300005213), we get a palindrome (82550005528).

The spelling of 31250000315 in words is "thirty-one billion, two hundred fifty million, three hundred fifteen", and thus it is an aban number.