312231101121 has 24 divisors (see below), whose sum is σ = 451590961536. Its totient is φ = 207881724960.

The previous prime is 312231101113. The next prime is 312231101167. The reversal of 312231101121 is 121101132213.

312231101121 is a `hidden beast` number, since 312 + 231 + 1 + 0 + 1 + 121 = 666.

It is not a de Polignac number, because 312231101121 - 2³ = 312231101113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312231101094 and 312231101103.

It is not an unprimeable number, because it can be changed into a prime (312231100121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25706776 + ... + 25718918.

It is an arithmetic number, because the mean of its divisors is an integer number (18816290064).

Almost surely, 2^312231101121 is an apocalyptic number.

It is an amenable number.

312231101121 is a deficient number, since it is larger than the sum of its proper divisors (139359860415).

312231101121 is a wasteful number, since it uses less digits than its factorization.

312231101121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15653 (or 15650 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 312231101121 its reverse (121101132213), we get a palindrome (433332233334).

The spelling of 312231101121 in words is "three hundred twelve billion, two hundred thirty-one million, one hundred one thousand, one hundred twenty-one".