1131023311002 has 96 divisors (see below), whose sum is σ = 2695805618688. Its totient is φ = 340526803968.

The previous prime is 1131023310979. The next prime is 1131023311003. The reversal of 1131023311002 is 2001133201311.

1131023311002 is a `hidden beast` number, since 11 + 310 + 2 + 331 + 10 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1131023311003) 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, 67222363 + ... + 67239185.

It is an arithmetic number, because the mean of its divisors is an integer number (28081308528).

Almost surely, 2^{1131023311002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131023311002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347902809344).

1131023311002 is an abundant number, since it is smaller than the sum of its proper divisors (1564782307686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131023311002 is a wasteful number, since it uses less digits than its factorization.

1131023311002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23004 (or 23001 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1131023311002 its reverse (2001133201311), we get a palindrome (3132156512313).

The spelling of 1131023311002 in words is "one trillion, one hundred thirty-one billion, twenty-three million, three hundred eleven thousand, two".