21341131040 has 48 divisors (see below), whose sum is σ = 50464964088. Its totient is φ = 8528572416.

The previous prime is 21341130989. The next prime is 21341131043. The reversal of 21341131040 is 4013114312.

It can be written as a sum of positive squares in 4 ways, for example, as 21340535056 + 595984 = 146084^2 + 772^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (21341131043) 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, 113864 + ... + 235896.

Almost surely, 2^21341131040 is an apocalyptic number.

21341131040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21341131040 is an abundant number, since it is smaller than the sum of its proper divisors (29123833048).

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

21341131040 is a wasteful number, since it uses less digits than its factorization.

21341131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123141 (or 123133 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21341131040 its reverse (4013114312), we get a palindrome (25354245352).

The spelling of 21341131040 in words is "twenty-one billion, three hundred forty-one million, one hundred thirty-one thousand, forty".