231122023011 has 48 divisors (see below), whose sum is σ = 376602670080. Its totient is φ = 135379632960.

The previous prime is 231122023009. The next prime is 231122023051. The reversal of 231122023011 is 110320221132.

It is not a de Polignac number, because 231122023011 - 2¹ = 231122023009 is a prime.

It is a super-2 number, since 2×231122023011² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231122023001) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22830 + ... + 680268.

It is an arithmetic number, because the mean of its divisors is an integer number (7845888960).

Almost surely, 2^231122023011 is an apocalyptic number.

231122023011 is a deficient number, since it is larger than the sum of its proper divisors (145480647069).

231122023011 is a wasteful number, since it uses less digits than its factorization.

231122023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657576 (or 657573 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 231122023011 its reverse (110320221132), we get a palindrome (341442244143).

The spelling of 231122023011 in words is "two hundred thirty-one billion, one hundred twenty-two million, twenty-three thousand, eleven".