312540523 has 16 divisors (see below), whose sum is σ = 326799360. Its totient is φ = 298692576.

The previous prime is 312540497. The next prime is 312540541. The reversal of 312540523 is 325045213.

It is a cyclic number.

It is not a de Polignac number, because 312540523 - 2¹³ = 312532331 is a prime.

It is a super-2 number, since 2×312540523² = 195363157034227058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312540593) 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, 396736 + ... + 397522.

It is an arithmetic number, because the mean of its divisors is an integer number (20424960).

Almost surely, 2^312540523 is an apocalyptic number.

312540523 is a deficient number, since it is larger than the sum of its proper divisors (14258837).

312540523 is a wasteful number, since it uses less digits than its factorization.

312540523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 312540523 is about 17678.8156560331. The cubic root of 312540523 is about 678.6337352396.

Adding to 312540523 its reverse (325045213), we get a palindrome (637585736).

The spelling of 312540523 in words is "three hundred twelve million, five hundred forty thousand, five hundred twenty-three".