231111121102013 has 8 divisors (see below), whose sum is σ = 241164901853568. Its totient is φ = 221057796278704.

The previous prime is 231111121102007. The next prime is 231111121102019. The reversal of 231111121102013 is 310201121111132.

It is an interprime number because it is at equal distance from previous prime (231111121102007) and next prime (231111121102019).

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 231111121102013 - 2⁴² = 226713074590909 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 (231111121102019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112946006 + ... + 114974007.

It is an arithmetic number, because the mean of its divisors is an integer number (30145612731696).

Almost surely, 2^{231111121102013} is an apocalyptic number.

231111121102013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231111121102013 is a deficient number, since it is larger than the sum of its proper divisors (10053780751555).

231111121102013 is a wasteful number, since it uses less digits than its factorization.

231111121102013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227964123.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 231111121102013 its reverse (310201121111132), we get a palindrome (541312242213145).

The spelling of 231111121102013 in words is "two hundred thirty-one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred two thousand, thirteen".