2312040402 has 48 divisors (see below), whose sum is σ = 5976709920. Its totient is φ = 660582216.

The previous prime is 2312040377. The next prime is 2312040407. The reversal of 2312040402 is 2040402132.

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 (2312040407) 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 23 ways as a sum of consecutive naturals, for example, 434248 + ... + 439539.

It is an arithmetic number, because the mean of its divisors is an integer number (124514790).

Almost surely, 2^2312040402 is an apocalyptic number.

2312040402 is an abundant number, since it is smaller than the sum of its proper divisors (3664669518).

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

2312040402 is a wasteful number, since it uses less digits than its factorization.

2312040402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873812 (or 873799 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 2312040402 is about 48083.6812442642. The cubic root of 2312040402 is about 1322.3055059933.

Adding to 2312040402 its reverse (2040402132), we get a palindrome (4352442534).

The spelling of 2312040402 in words is "two billion, three hundred twelve million, forty thousand, four hundred two".