231001153157 has 2 divisors, whose sum is σ = 231001153158. Its totient is φ = 231001153156.

The previous prime is 231001153129. The next prime is 231001153217. The reversal of 231001153157 is 751351100132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226727393281 + 4273759876 = 476159^2 + 65374^2 .

It is a cyclic number.

It is not a de Polignac number, because 231001153157 - 2⁶ = 231001153093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231001153127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115500576578 + 115500576579.

It is an arithmetic number, because the mean of its divisors is an integer number (115500576579).

Almost surely, 2^231001153157 is an apocalyptic number.

It is an amenable number.

231001153157 is a deficient number, since it is larger than the sum of its proper divisors (1).

231001153157 is an equidigital number, since it uses as much as digits as its factorization.

231001153157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3150, while the sum is 29.

Adding to 231001153157 its reverse (751351100132), we get a palindrome (982352253289).

The spelling of 231001153157 in words is "two hundred thirty-one billion, one million, one hundred fifty-three thousand, one hundred fifty-seven".