7020644131 has 12 divisors (see below), whose sum is σ = 7343300272. Its totient is φ = 6711612336.

The previous prime is 7020644123. The next prime is 7020644159. The reversal of 7020644131 is 1314460207.

It is not a de Polignac number, because 7020644131 - 2³ = 7020644123 is a prime.

It is a super-2 number, since 2×7020644131² = 98578888028289490322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7020644131.

It is not an unprimeable number, because it can be changed into a prime (7020644731) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1524925 + ... + 1529521.

Almost surely, 2^7020644131 is an apocalyptic number.

7020644131 is a deficient number, since it is larger than the sum of its proper divisors (322656141).

7020644131 is a wasteful number, since it uses less digits than its factorization.

7020644131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7530 (or 7507 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 7020644131 is about 83789.2841060240. The cubic root of 7020644131 is about 1914.8098515261.

The spelling of 7020644131 in words is "seven billion, twenty million, six hundred forty-four thousand, one hundred thirty-one".