1230123201131 has 4 divisors (see below), whose sum is σ = 1341952583064. Its totient is φ = 1118293819200.

The previous prime is 1230123201113. The next prime is 1230123201157. The reversal of 1230123201131 is 1311023210321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1230123201131 - 2²⁶ = 1230056092267 is a prime.

It is a super-2 number, since 2×1230123201131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230123201191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55914690950 + ... + 55914690971.

It is an arithmetic number, because the mean of its divisors is an integer number (335488145766).

Almost surely, 2^{1230123201131} is an apocalyptic number.

1230123201131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1230123201131 is a deficient number, since it is larger than the sum of its proper divisors (111829381933).

1230123201131 is a wasteful number, since it uses less digits than its factorization.

1230123201131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111829381932.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1230123201131 its reverse (1311023210321), we get a palindrome (2541146411452).

The spelling of 1230123201131 in words is "one trillion, two hundred thirty billion, one hundred twenty-three million, two hundred one thousand, one hundred thirty-one".