231304120477 has 2 divisors, whose sum is σ = 231304120478. Its totient is φ = 231304120476.

The previous prime is 231304120469. The next prime is 231304120547. The reversal of 231304120477 is 774021403132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209538724516 + 21765395961 = 457754^2 + 147531^2 .

It is a cyclic number.

It is not a de Polignac number, because 231304120477 - 2³ = 231304120469 is a prime.

It is a super-2 number, since 2×231304120477² (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 (231304120457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115652060238 + 115652060239.

It is an arithmetic number, because the mean of its divisors is an integer number (115652060239).

Almost surely, 2^231304120477 is an apocalyptic number.

It is an amenable number.

231304120477 is a deficient number, since it is larger than the sum of its proper divisors (1).

231304120477 is an equidigital number, since it uses as much as digits as its factorization.

231304120477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The spelling of 231304120477 in words is "two hundred thirty-one billion, three hundred four million, one hundred twenty thousand, four hundred seventy-seven".