231120123011 has 8 divisors (see below), whose sum is σ = 236767784400. Its totient is φ = 225472965760.

The previous prime is 231120122953. The next prime is 231120123029. The reversal of 231120123011 is 110321021132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231120123011 is a prime.

It is a super-2 number, since 2×231120123011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231120129011) 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, 903560 + ... + 1130778.

It is an arithmetic number, because the mean of its divisors is an integer number (29595973050).

Almost surely, 2^231120123011 is an apocalyptic number.

231120123011 is a deficient number, since it is larger than the sum of its proper divisors (5647661389).

231120123011 is a wasteful number, since it uses less digits than its factorization.

231120123011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252069.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231120123011 its reverse (110321021132), we get a palindrome (341441144143).

The spelling of 231120123011 in words is "two hundred thirty-one billion, one hundred twenty million, one hundred twenty-three thousand, eleven".