10721543031 has 12 divisors (see below), whose sum is σ = 15585316552. Its totient is φ = 7102167696.

The previous prime is 10721543029. The next prime is 10721543047. The reversal of 10721543031 is 13034512701.

10721543031 is a `hidden beast` number, since 10 + 7 + 215 + 430 + 3 + 1 = 666.

It is not a de Polignac number, because 10721543031 - 2¹ = 10721543029 is a prime.

It is a super-2 number, since 2×10721543031² (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 = 10721542986 and 10721543004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10721545031) 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, 3792481 + ... + 3795306.

Almost surely, 2^10721543031 is an apocalyptic number.

10721543031 is a deficient number, since it is larger than the sum of its proper divisors (4863773521).

10721543031 is a wasteful number, since it uses less digits than its factorization.

10721543031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7587950 (or 7587947 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 10721543031 in words is "ten billion, seven hundred twenty-one million, five hundred forty-three thousand, thirty-one".