2312744731 has 4 divisors (see below), whose sum is σ = 2522994264. Its totient is φ = 2102495200.

The previous prime is 2312744647. The next prime is 2312744779. The reversal of 2312744731 is 1374472132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2312744731 - 2²¹ = 2310647579 is a prime.

It is a super-2 number, since 2×2312744731² = 10697576381536524722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2312744431) 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, 105124750 + ... + 105124771.

It is an arithmetic number, because the mean of its divisors is an integer number (630748566).

Almost surely, 2^2312744731 is an apocalyptic number.

2312744731 is a deficient number, since it is larger than the sum of its proper divisors (210249533).

2312744731 is a wasteful number, since it uses less digits than its factorization.

2312744731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210249532.

The product of its digits is 28224, while the sum is 34.

The square root of 2312744731 is about 48091.0046786299. The cubic root of 2312744731 is about 1322.4397659825.

The spelling of 2312744731 in words is "two billion, three hundred twelve million, seven hundred forty-four thousand, seven hundred thirty-one".