2311312303 has 4 divisors (see below), whose sum is σ = 2312676000. Its totient is φ = 2309948608.

The previous prime is 2311312301. The next prime is 2311312321. The reversal of 2311312303 is 3032131132.

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 2311312303 - 2¹ = 2311312301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2311312301) 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, 679303 + ... + 682696.

It is an arithmetic number, because the mean of its divisors is an integer number (578169000).

Almost surely, 2^2311312303 is an apocalyptic number.

2311312303 is a deficient number, since it is larger than the sum of its proper divisors (1363697).

2311312303 is a wasteful number, since it uses less digits than its factorization.

2311312303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363696.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 2311312303 is about 48076.1094827774. The cubic root of 2311312303 is about 1322.1666862741.

Adding to 2311312303 its reverse (3032131132), we get a palindrome (5343443435).

The spelling of 2311312303 in words is "two billion, three hundred eleven million, three hundred twelve thousand, three hundred three".