147271421831 has 4 divisors (see below), whose sum is σ = 153674527152. Its totient is φ = 140868316512.

The previous prime is 147271421819. The next prime is 147271421861. The reversal of 147271421831 is 138124172741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 138124172741 = 421 ⋅328085921.

It is a cyclic number.

It is not a de Polignac number, because 147271421831 - 2¹⁴ = 147271405447 is a prime.

It is a super-2 number, since 2×147271421831² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147271421861) 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, 3201552626 + ... + 3201552671.

It is an arithmetic number, because the mean of its divisors is an integer number (38418631788).

Almost surely, 2^147271421831 is an apocalyptic number.

147271421831 is a deficient number, since it is larger than the sum of its proper divisors (6403105321).

147271421831 is an equidigital number, since it uses as much as digits as its factorization.

147271421831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6403105320.

The product of its digits is 75264, while the sum is 41.

The spelling of 147271421831 in words is "one hundred forty-seven billion, two hundred seventy-one million, four hundred twenty-one thousand, eight hundred thirty-one".