231545401043039 has 2 divisors, whose sum is σ = 231545401043040. Its totient is φ = 231545401043038.

The previous prime is 231545401043003. The next prime is 231545401043059. The reversal of 231545401043039 is 930340104545132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231545401043039 is a prime.

It is a super-2 number, since 2×231545401043039² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231545401043059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115772700521519 + 115772700521520.

It is an arithmetic number, because the mean of its divisors is an integer number (115772700521520).

Almost surely, 2^{231545401043039} is an apocalyptic number.

231545401043039 is a deficient number, since it is larger than the sum of its proper divisors (1).

231545401043039 is an equidigital number, since it uses as much as digits as its factorization.

231545401043039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 44.

The spelling of 231545401043039 in words is "two hundred thirty-one trillion, five hundred forty-five billion, four hundred one million, forty-three thousand, thirty-nine".