331134305881 has 2 divisors, whose sum is σ = 331134305882. Its totient is φ = 331134305880.

The previous prime is 331134305869. The next prime is 331134305921. The reversal of 331134305881 is 188503431133.

It is a happy number.

It is an a-pointer prime, because the next prime (331134305921) can be obtained adding 331134305881 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 268178979600 + 62955326281 = 517860^2 + 250909^2 .

It is a cyclic number.

It is not a de Polignac number, because 331134305881 - 2³⁵ = 296774567513 is a prime.

It is a super-2 number, since 2×331134305881² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331134302881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165567152940 + 165567152941.

It is an arithmetic number, because the mean of its divisors is an integer number (165567152941).

Almost surely, 2^331134305881 is an apocalyptic number.

It is an amenable number.

331134305881 is a deficient number, since it is larger than the sum of its proper divisors (1).

331134305881 is an equidigital number, since it uses as much as digits as its factorization.

331134305881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 331134305881 in words is "three hundred thirty-one billion, one hundred thirty-four million, three hundred five thousand, eight hundred eighty-one".