10020339731 has 4 divisors (see below), whose sum is σ = 10022268600. Its totient is φ = 10018410864.

The previous prime is 10020339709. The next prime is 10020339739. The reversal of 10020339731 is 13793302001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13793302001 = 449 ⋅30720049.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020339731 is a prime.

It is a super-2 number, since 2×10020339731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020339694 and 10020339703.

It is not an unprimeable number, because it can be changed into a prime (10020339739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956621 + ... + 967038.

It is an arithmetic number, because the mean of its divisors is an integer number (2505567150).

Almost surely, 2^10020339731 is an apocalyptic number.

10020339731 is a deficient number, since it is larger than the sum of its proper divisors (1928869).

10020339731 is an equidigital number, since it uses as much as digits as its factorization.

10020339731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1928868.

The product of its (nonzero) digits is 3402, while the sum is 29.

The spelling of 10020339731 in words is "ten billion, twenty million, three hundred thirty-nine thousand, seven hundred thirty-one".