312140530 has 32 divisors (see below), whose sum is σ = 606163824. Its totient is φ = 115044096.

The previous prime is 312140513. The next prime is 312140551. The reversal of 312140530 is 35041213.

It can be written as a sum of positive squares in 8 ways, for example, as 81920601 + 230219929 = 9051^2 + 15173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312140498 and 312140507.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83052 + ... + 86728.

Almost surely, 2^312140530 is an apocalyptic number.

312140530 is a deficient number, since it is larger than the sum of its proper divisors (294023294).

312140530 is a wasteful number, since it uses less digits than its factorization.

312140530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4350.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 312140530 is about 17667.4992571105. The cubic root of 312140530 is about 678.3441038615.

Adding to 312140530 its reverse (35041213), we get a palindrome (347181743).

The spelling of 312140530 in words is "three hundred twelve million, one hundred forty thousand, five hundred thirty".