231000020321153 has 2 divisors, whose sum is σ = 231000020321154. Its totient is φ = 231000020321152.

The previous prime is 231000020321111. The next prime is 231000020321179. The reversal of 231000020321153 is 351123020000132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197175292615744 + 33824727705409 = 14041912^2 + 5815903^2 .

It is a cyclic number.

It is not a de Polignac number, because 231000020321153 - 2⁶ = 231000020321089 is a prime.

It is a super-2 number, since 2×231000020321153² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231000620321153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115500010160576 + 115500010160577.

It is an arithmetic number, because the mean of its divisors is an integer number (115500010160577).

Almost surely, 2^{231000020321153} is an apocalyptic number.

It is an amenable number.

231000020321153 is a deficient number, since it is larger than the sum of its proper divisors (1).

231000020321153 is an equidigital number, since it uses as much as digits as its factorization.

231000020321153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 231000020321153 its reverse (351123020000132), we get a palindrome (582123040321285).

The spelling of 231000020321153 in words is "two hundred thirty-one trillion, twenty million, three hundred twenty-one thousand, one hundred fifty-three".