20130402231404 has 24 divisors (see below), whose sum is σ = 35518876681680. Its totient is φ = 9982303720704.

The previous prime is 20130402231403. The next prime is 20130402231487. The reversal of 20130402231404 is 40413220403102.

It is a super-2 number, since 2×20130402231404² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20130402231403) 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, 18465809 + ... + 19525544.

It is an arithmetic number, because the mean of its divisors is an integer number (1479953195070).

Almost surely, 2^{20130402231404} is an apocalyptic number.

It is an amenable number.

20130402231404 is a deficient number, since it is larger than the sum of its proper divisors (15388474450276).

20130402231404 is a wasteful number, since it uses less digits than its factorization.

20130402231404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37992449 (or 37992447 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 20130402231404 its reverse (40413220403102), we get a palindrome (60543622634506).

The spelling of 20130402231404 in words is "twenty trillion, one hundred thirty billion, four hundred two million, two hundred thirty-one thousand, four hundred four".