121311112031 has 8 divisors (see below), whose sum is σ = 121521685824. Its totient is φ = 121100722560.

The previous prime is 121311112001. The next prime is 121311112103. The reversal of 121311112031 is 130211113121.

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 121311112031 - 2⁶ = 121311111967 is a prime.

It is a super-2 number, since 2×121311112031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121311112001) 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, 1305491 + ... + 1395323.

It is an arithmetic number, because the mean of its divisors is an integer number (15190210728).

Almost surely, 2^121311112031 is an apocalyptic number.

121311112031 is a deficient number, since it is larger than the sum of its proper divisors (210573793).

121311112031 is a wasteful number, since it uses less digits than its factorization.

121311112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92161.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121311112031 its reverse (130211113121), we get a palindrome (251522225152).

The spelling of 121311112031 in words is "one hundred twenty-one billion, three hundred eleven million, one hundred twelve thousand, thirty-one".