401231231240123 has 2 divisors, whose sum is σ = 401231231240124. Its totient is φ = 401231231240122.

The previous prime is 401231231240093. The next prime is 401231231240153. The reversal of 401231231240123 is 321042132132104.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (401231231240093) and next prime (401231231240153).

It is a cyclic number.

It is not a de Polignac number, because 401231231240123 - 2²² = 401231227045819 is a prime.

It is a super-3 number, since 3×401231231240123³ (a number of 45 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (401231231240153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200615615620061 + 200615615620062.

It is an arithmetic number, because the mean of its divisors is an integer number (200615615620062).

Almost surely, 2^{401231231240123} is an apocalyptic number.

401231231240123 is a deficient number, since it is larger than the sum of its proper divisors (1).

401231231240123 is an equidigital number, since it uses as much as digits as its factorization.

401231231240123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 401231231240123 its reverse (321042132132104), we get a palindrome (722273363372227).

The spelling of 401231231240123 in words is "four hundred one trillion, two hundred thirty-one billion, two hundred thirty-one million, two hundred forty thousand, one hundred twenty-three".