1202311112331 has 16 divisors (see below), whose sum is σ = 1866660920064. Its totient is φ = 674071997664.

The previous prime is 1202311112329. The next prime is 1202311112369. The reversal of 1202311112331 is 1332111132021.

It is not a de Polignac number, because 1202311112331 - 2¹ = 1202311112329 is a prime.

It is a super-2 number, since 2×1202311112331² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1202311112298 and 1202311112307.

It is not an unprimeable number, because it can be changed into a prime (1202311112311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540120681 + ... + 540122906.

It is an arithmetic number, because the mean of its divisors is an integer number (116666307504).

Almost surely, 2^{1202311112331} is an apocalyptic number.

1202311112331 is a deficient number, since it is larger than the sum of its proper divisors (664349807733).

1202311112331 is a wasteful number, since it uses less digits than its factorization.

1202311112331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080243650.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1202311112331 its reverse (1332111132021), we get a palindrome (2534422244352).

The spelling of 1202311112331 in words is "one trillion, two hundred two billion, three hundred eleven million, one hundred twelve thousand, three hundred thirty-one".