231295138747 has 2 divisors, whose sum is σ = 231295138748. Its totient is φ = 231295138746.

The previous prime is 231295138733. The next prime is 231295138759. The reversal of 231295138747 is 747831592132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231295138747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231295138694 and 231295138703.

It is not a weakly prime, because it can be changed into another prime (231295838747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115647569373 + 115647569374.

It is an arithmetic number, because the mean of its divisors is an integer number (115647569374).

Almost surely, 2^231295138747 is an apocalyptic number.

231295138747 is a deficient number, since it is larger than the sum of its proper divisors (1).

231295138747 is an equidigital number, since it uses as much as digits as its factorization.

231295138747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2540160, while the sum is 52.

The spelling of 231295138747 in words is "two hundred thirty-one billion, two hundred ninety-five million, one hundred thirty-eight thousand, seven hundred forty-seven".