312540853 has 4 divisors (see below), whose sum is σ = 322622848. Its totient is φ = 302458860.

The previous prime is 312540817. The next prime is 312540871. The reversal of 312540853 is 358045213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312540853 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 10081963 = 312540853 / (3 + 1 + 2 + 5 + 4 + 0 + 8 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312540653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5040951 + ... + 5041012.

It is an arithmetic number, because the mean of its divisors is an integer number (80655712).

Almost surely, 2^312540853 is an apocalyptic number.

It is an amenable number.

312540853 is a deficient number, since it is larger than the sum of its proper divisors (10081995).

312540853 is a wasteful number, since it uses less digits than its factorization.

312540853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10081994.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 312540853 is about 17678.8249892350. The cubic root of 312540853 is about 678.6339740876.

The spelling of 312540853 in words is "three hundred twelve million, five hundred forty thousand, eight hundred fifty-three".