231032230157 has 2 divisors, whose sum is σ = 231032230158. Its totient is φ = 231032230156.

The previous prime is 231032230129. The next prime is 231032230207. The reversal of 231032230157 is 751032230132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161691647881 + 69340582276 = 402109^2 + 263326^2 .

It is a cyclic number.

It is not a de Polignac number, because 231032230157 - 2¹⁴ = 231032213773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231032239157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115516115078 + 115516115079.

It is an arithmetic number, because the mean of its divisors is an integer number (115516115079).

Almost surely, 2^231032230157 is an apocalyptic number.

It is an amenable number.

231032230157 is a deficient number, since it is larger than the sum of its proper divisors (1).

231032230157 is an equidigital number, since it uses as much as digits as its factorization.

231032230157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 29.

Adding to 231032230157 its reverse (751032230132), we get a palindrome (982064460289).

The spelling of 231032230157 in words is "two hundred thirty-one billion, thirty-two million, two hundred thirty thousand, one hundred fifty-seven".