315139530 has 32 divisors (see below), whose sum is σ = 774785088. Its totient is φ = 81987200.

The previous prime is 315139519. The next prime is 315139541. The reversal of 315139530 is 35931513.

It is an interprime number because it is at equal distance from previous prime (315139519) and next prime (315139541).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126876 + ... + 129335.

It is an arithmetic number, because the mean of its divisors is an integer number (24212034).

Almost surely, 2^315139530 is an apocalyptic number.

315139530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

315139530 is an abundant number, since it is smaller than the sum of its proper divisors (459645558).

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

315139530 is a wasteful number, since it uses less digits than its factorization.

315139530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256262.

The product of its (nonzero) digits is 6075, while the sum is 30.

The square root of 315139530 is about 17752.1697265433. The cubic root of 315139530 is about 680.5096597256.

The spelling of 315139530 in words is "three hundred fifteen million, one hundred thirty-nine thousand, five hundred thirty".