231373488877 has 2 divisors, whose sum is σ = 231373488878. Its totient is φ = 231373488876.

The previous prime is 231373488851. The next prime is 231373488889. The reversal of 231373488877 is 778884373132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227191409316 + 4182079561 = 476646^2 + 64669^2 .

It is a cyclic number.

It is not a de Polignac number, because 231373488877 - 2¹¹ = 231373486829 is a prime.

It is a super-2 number, since 2×231373488877² (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 (231373488377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115686744438 + 115686744439.

It is an arithmetic number, because the mean of its divisors is an integer number (115686744439).

Almost surely, 2^231373488877 is an apocalyptic number.

It is an amenable number.

231373488877 is a deficient number, since it is larger than the sum of its proper divisors (1).

231373488877 is an equidigital number, since it uses as much as digits as its factorization.

231373488877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37933056, while the sum is 61.

The spelling of 231373488877 in words is "two hundred thirty-one billion, three hundred seventy-three million, four hundred eighty-eight thousand, eight hundred seventy-seven".