1231101202023 has 144 divisors (see below), whose sum is σ = 2336033325600. Its totient is φ = 617062440960.

The previous prime is 1231101202021. The next prime is 1231101202061. The reversal of 1231101202023 is 3202021011321.

It is not a de Polignac number, because 1231101202023 - 2¹ = 1231101202021 is a prime.

It is a super-2 number, since 2×1231101202023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231101201987 and 1231101202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231101202021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 398542063 + ... + 398545151.

It is an arithmetic number, because the mean of its divisors is an integer number (16222453650).

Almost surely, 2^{1231101202023} is an apocalyptic number.

1231101202023 is a deficient number, since it is larger than the sum of its proper divisors (1104932123577).

1231101202023 is a wasteful number, since it uses less digits than its factorization.

1231101202023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5982 (or 5972 counting only the distinct ones).

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

Adding to 1231101202023 its reverse (3202021011321), we get a palindrome (4433122213344).

The spelling of 1231101202023 in words is "one trillion, two hundred thirty-one billion, one hundred one million, two hundred two thousand, twenty-three".