312145743 has 16 divisors (see below), whose sum is σ = 512239616. Its totient is φ = 164648160.

The previous prime is 312145741. The next prime is 312145747. The reversal of 312145743 is 347541213.

It is a happy number.

It is not a de Polignac number, because 312145743 - 2¹ = 312145741 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312145743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312145741) 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, 571423 + ... + 571968.

It is an arithmetic number, because the mean of its divisors is an integer number (32014976).

Almost surely, 2^312145743 is an apocalyptic number.

312145743 is a deficient number, since it is larger than the sum of its proper divisors (200093873).

312145743 is a wasteful number, since it uses less digits than its factorization.

312145743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143414.

The product of its digits is 10080, while the sum is 30.

The square root of 312145743 is about 17667.6467872776. The cubic root of 312145743 is about 678.3478801394.

Adding to 312145743 its reverse (347541213), we get a palindrome (659686956).

The spelling of 312145743 in words is "three hundred twelve million, one hundred forty-five thousand, seven hundred forty-three".