315000031 has 16 divisors (see below), whose sum is σ = 340130560. Its totient is φ = 290822400.

The previous prime is 315000029. The next prime is 315000061. The reversal of 315000031 is 130000513.

It is a cyclic number.

It is not a de Polignac number, because 315000031 - 2¹ = 315000029 is a prime.

It is a super-2 number, since 2×315000031² = 198450039060001922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 314999975 and 315000020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315000011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122206 + ... + 124756.

It is an arithmetic number, because the mean of its divisors is an integer number (21258160).

Almost surely, 2^315000031 is an apocalyptic number.

315000031 is a deficient number, since it is larger than the sum of its proper divisors (25130529).

315000031 is a wasteful number, since it uses less digits than its factorization.

315000031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734.

The product of its (nonzero) digits is 45, while the sum is 13.

The square root of 315000031 is about 17748.2402226249. The cubic root of 315000031 is about 680.4092339156.

Adding to 315000031 its reverse (130000513), we get a palindrome (445000544).

The spelling of 315000031 in words is "three hundred fifteen million, thirty-one", and thus it is an aban number.