10438581531 has 16 divisors (see below), whose sum is σ = 15907891968. Its totient is φ = 5964348000.

The previous prime is 10438581511. The next prime is 10438581563. The reversal of 10438581531 is 13518583401.

It is not a de Polignac number, because 10438581531 - 2¹³ = 10438573339 is a prime.

It is a super-2 number, since 2×10438581531² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10438581531.

It is not an unprimeable number, because it can be changed into a prime (10438581511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340216 + ... + 369626.

It is an arithmetic number, because the mean of its divisors is an integer number (994243248).

Almost surely, 2^10438581531 is an apocalyptic number.

10438581531 is a deficient number, since it is larger than the sum of its proper divisors (5469310437).

10438581531 is a wasteful number, since it uses less digits than its factorization.

10438581531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46322.

The product of its (nonzero) digits is 57600, while the sum is 39.

The spelling of 10438581531 in words is "ten billion, four hundred thirty-eight million, five hundred eighty-one thousand, five hundred thirty-one".