2306310455781 has 6 divisors (see below), whose sum is σ = 3331337325030. Its totient is φ = 1537540303848.

The previous prime is 2306310455741. The next prime is 2306310455821. The reversal of 2306310455781 is 1875540136032.

It is a happy number.

2306310455781 is a `hidden beast` number, since 2 + 3 + 0 + 6 + 3 + 10 + 4 + 557 + 81 = 666.

It is an interprime number because it is at equal distance from previous prime (2306310455741) and next prime (2306310455821).

It can be written as a sum of positive squares in only one way, i.e., 1163667042756 + 1142643413025 = 1078734^2 + 1068945^2 .

It is not a de Polignac number, because 2306310455781 - 2⁶ = 2306310455717 is a prime.

It is a super-2 number, since 2×2306310455781² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2306310455731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128128358646 + ... + 128128358663.

It is an arithmetic number, because the mean of its divisors is an integer number (555222887505).

Almost surely, 2^{2306310455781} is an apocalyptic number.

It is an amenable number.

2306310455781 is a deficient number, since it is larger than the sum of its proper divisors (1025026869249).

2306310455781 is a wasteful number, since it uses less digits than its factorization.

2306310455781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256256717315 (or 256256717312 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 2306310455781 in words is "two trillion, three hundred six billion, three hundred ten million, four hundred fifty-five thousand, seven hundred eighty-one".