1231023010111 has 8 divisors (see below), whose sum is σ = 1271013041664. Its totient is φ = 1191050454360.

The previous prime is 1231023010103. The next prime is 1231023010127. The reversal of 1231023010111 is 1110103201321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231023010111 - 2³ = 1231023010103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231023010181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4225705 + ... + 4507618.

It is an arithmetic number, because the mean of its divisors is an integer number (158876630208).

Almost surely, 2^{1231023010111} is an apocalyptic number.

1231023010111 is a deficient number, since it is larger than the sum of its proper divisors (39990031553).

1231023010111 is an equidigital number, since it uses as much as digits as its factorization.

1231023010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8737901.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 1231023010111 its reverse (1110103201321), we get a palindrome (2341126211432).

The spelling of 1231023010111 in words is "one trillion, two hundred thirty-one billion, twenty-three million, ten thousand, one hundred eleven".