231303144277 has 2 divisors, whose sum is σ = 231303144278. Its totient is φ = 231303144276.

The previous prime is 231303144271. The next prime is 231303144301. The reversal of 231303144277 is 772441303132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126343991601 + 104959152676 = 355449^2 + 323974^2 .

It is a cyclic number.

It is not a de Polignac number, because 231303144277 - 2²³ = 231294755669 is a prime.

It is a super-2 number, since 2×231303144277² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231303144271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115651572138 + 115651572139.

It is an arithmetic number, because the mean of its divisors is an integer number (115651572139).

Almost surely, 2^231303144277 is an apocalyptic number.

It is an amenable number.

231303144277 is a deficient number, since it is larger than the sum of its proper divisors (1).

231303144277 is an equidigital number, since it uses as much as digits as its factorization.

231303144277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 37.

The spelling of 231303144277 in words is "two hundred thirty-one billion, three hundred three million, one hundred forty-four thousand, two hundred seventy-seven".