147311000021 has 4 divisors (see below), whose sum is σ = 147359508492. Its totient is φ = 147262491552.

The previous prime is 147310999999. The next prime is 147311000041. The reversal of 147311000021 is 120000113741.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 92139567025 + 55171432996 = 303545^2 + 234886^2 .

It is a cyclic number.

It is not a de Polignac number, because 147311000021 - 2¹⁴ = 147310983637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147310999957 and 147311000002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147311000041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24249680 + ... + 24255753.

It is an arithmetic number, because the mean of its divisors is an integer number (36839877123).

Almost surely, 2^147311000021 is an apocalyptic number.

It is an amenable number.

147311000021 is a deficient number, since it is larger than the sum of its proper divisors (48508471).

147311000021 is an equidigital number, since it uses as much as digits as its factorization.

147311000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48508470.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 147311000021 its reverse (120000113741), we get a palindrome (267311113762).

The spelling of 147311000021 in words is "one hundred forty-seven billion, three hundred eleven million, twenty-one", and thus it is an aban number.