234247715475881 has 2 divisors, whose sum is σ = 234247715475882. Its totient is φ = 234247715475880.

The previous prime is 234247715475803. The next prime is 234247715475899. The reversal of 234247715475881 is 188574517742432.

It is a happy number.

234247715475881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119311819770025 + 114935895705856 = 10922995^2 + 10720816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234247715475881 is a prime.

It is a super-2 number, since 2×234247715475881² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (234247715445881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117123857737940 + 117123857737941.

It is an arithmetic number, because the mean of its divisors is an integer number (117123857737941).

Almost surely, 2^{234247715475881} is an apocalyptic number.

It is an amenable number.

234247715475881 is a deficient number, since it is larger than the sum of its proper divisors (1).

234247715475881 is an equidigital number, since it uses as much as digits as its factorization.

234247715475881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 421478400, while the sum is 68.

The spelling of 234247715475881 in words is "two hundred thirty-four trillion, two hundred forty-seven billion, seven hundred fifteen million, four hundred seventy-five thousand, eight hundred eighty-one".