231212124311123 has 2 divisors, whose sum is σ = 231212124311124. Its totient is φ = 231212124311122.

The previous prime is 231212124311117. The next prime is 231212124311131. The reversal of 231212124311123 is 321113421212132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231212124311123 - 2¹⁶ = 231212124245587 is a prime.

It is a super-2 number, since 2×231212124311123² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231212124311323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115606062155561 + 115606062155562.

It is an arithmetic number, because the mean of its divisors is an integer number (115606062155562).

Almost surely, 2^{231212124311123} is an apocalyptic number.

231212124311123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231212124311123 is an equidigital number, since it uses as much as digits as its factorization.

231212124311123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 29.

Adding to 231212124311123 its reverse (321113421212132), we get a palindrome (552325545523255).

The spelling of 231212124311123 in words is "two hundred thirty-one trillion, two hundred twelve billion, one hundred twenty-four million, three hundred eleven thousand, one hundred twenty-three".