38434631 has 4 divisors (see below), whose sum is σ = 38450832. Its totient is φ = 38418432.

The previous prime is 38434609. The next prime is 38434639. The reversal of 38434631 is 13643483.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38434631 is a prime.

It is a super-2 number, since 2×38434631² = 2954441720212322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38434639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3770 + ... + 9543.

It is an arithmetic number, because the mean of its divisors is an integer number (9612708).

Almost surely, 2^38434631 is an apocalyptic number.

38434631 is a deficient number, since it is larger than the sum of its proper divisors (16201).

38434631 is a wasteful number, since it uses less digits than its factorization.

38434631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16200.

The product of its digits is 20736, while the sum is 32.

The square root of 38434631 is about 6199.5670010090. The cubic root of 38434631 is about 337.4744554969.

The spelling of 38434631 in words is "thirty-eight million, four hundred thirty-four thousand, six hundred thirty-one".