1201331023 has 8 divisors (see below), whose sum is σ = 1209110000. Its totient is φ = 1193574528.

The previous prime is 1201330987. The next prime is 1201331057. The reversal of 1201331023 is 3201331021.

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-1201331023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201330988 and 1201331006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201331063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109015 + ... + 119527.

It is an arithmetic number, because the mean of its divisors is an integer number (151138750).

Almost surely, 2^1201331023 is an apocalyptic number.

1201331023 is a deficient number, since it is larger than the sum of its proper divisors (7778977).

1201331023 is a wasteful number, since it uses less digits than its factorization.

1201331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11241.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1201331023 is about 34660.2224891878. Note that the first 3 decimals coincide. The cubic root of 1201331023 is about 1063.0513192843.

Adding to 1201331023 its reverse (3201331021), we get a palindrome (4402662044).

The spelling of 1201331023 in words is "one billion, two hundred one million, three hundred thirty-one thousand, twenty-three".