2331111402 has 48 divisors (see below), whose sum is σ = 5312107008. Its totient is φ = 737773920.

The previous prime is 2331111373. The next prime is 2331111403. The reversal of 2331111402 is 2041111332.

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 (2331111403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9838 + ... + 68985.

It is an arithmetic number, because the mean of its divisors is an integer number (110668896).

Almost surely, 2^2331111402 is an apocalyptic number.

2331111402 is an abundant number, since it is smaller than the sum of its proper divisors (2980995606).

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

2331111402 is a wasteful number, since it uses less digits than its factorization.

2331111402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78915 (or 78912 counting only the distinct ones).

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

The square root of 2331111402 is about 48281.5845017539. The cubic root of 2331111402 is about 1325.9312597877.

Adding to 2331111402 its reverse (2041111332), we get a palindrome (4372222734).

The spelling of 2331111402 in words is "two billion, three hundred thirty-one million, one hundred eleven thousand, four hundred two".