231551500323029 has 2 divisors, whose sum is σ = 231551500323030. Its totient is φ = 231551500323028.

The previous prime is 231551500322959. The next prime is 231551500323049. The reversal of 231551500323029 is 920323005155132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231550697904100 + 802418929 = 15216790^2 + 28327^2 .

It is a cyclic number.

It is not a de Polignac number, because 231551500323029 - 2⁸ = 231551500322773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231551500323049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115775750161514 + 115775750161515.

It is an arithmetic number, because the mean of its divisors is an integer number (115775750161515).

Almost surely, 2^{231551500323029} is an apocalyptic number.

It is an amenable number.

231551500323029 is a deficient number, since it is larger than the sum of its proper divisors (1).

231551500323029 is an equidigital number, since it uses as much as digits as its factorization.

231551500323029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 41.

The spelling of 231551500323029 in words is "two hundred thirty-one trillion, five hundred fifty-one billion, five hundred million, three hundred twenty-three thousand, twenty-nine".