38043731 has 18 divisors (see below), whose sum is σ = 43115940. Its totient is φ = 33533280.

The previous prime is 38043721. The next prime is 38043749. The reversal of 38043731 is 13734083.

It is not a de Polignac number, because 38043731 - 2¹⁰ = 38042707 is a prime.

It is a super-2 number, since 2×38043731² = 2894650936800722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 38043694 and 38043703.

It is not an unprimeable number, because it can be changed into a prime (38043701) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 521111 + ... + 521183.

It is an arithmetic number, because the mean of its divisors is an integer number (2395330).

Almost surely, 2^38043731 is an apocalyptic number.

38043731 is a deficient number, since it is larger than the sum of its proper divisors (5072209).

38043731 is an equidigital number, since it uses as much as digits as its factorization.

38043731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 38043731 is about 6167.9600355385. The cubic root of 38043731 is about 336.3264583851.

The spelling of 38043731 in words is "thirty-eight million, forty-three thousand, seven hundred thirty-one".