1201023131331 has 8 divisors (see below), whose sum is σ = 1602782571280. Its totient is φ = 799972889472.

The previous prime is 1201023131327. The next prime is 1201023131339. The reversal of 1201023131331 is 1331313201021.

It is a happy number.

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

It is not a de Polignac number, because 1201023131331 - 2² = 1201023131327 is a prime.

It is a super-2 number, since 2×1201023131331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1201023131298 and 1201023131307.

It is not an unprimeable number, because it can be changed into a prime (1201023131339) 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, 177295570 + ... + 177302343.

It is an arithmetic number, because the mean of its divisors is an integer number (200347821410).

Almost surely, 2^{1201023131331} is an apocalyptic number.

1201023131331 is a deficient number, since it is larger than the sum of its proper divisors (401759439949).

1201023131331 is a wasteful number, since it uses less digits than its factorization.

1201023131331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354599045.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1201023131331 its reverse (1331313201021), we get a palindrome (2532336332352).

The spelling of 1201023131331 in words is "one trillion, two hundred one billion, twenty-three million, one hundred thirty-one thousand, three hundred thirty-one".