83881431 has 6 divisors (see below), whose sum is σ = 121162080. Its totient is φ = 55920948.

The previous prime is 83881423. The next prime is 83881481. The reversal of 83881431 is 13418838.

It is not a de Polignac number, because 83881431 - 2³ = 83881423 is a prime.

It is a super-2 number, since 2×83881431² = 14072188933215522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83881481) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4660071 + ... + 4660088.

It is an arithmetic number, because the mean of its divisors is an integer number (20193680).

Almost surely, 2^83881431 is an apocalyptic number.

83881431 is a deficient number, since it is larger than the sum of its proper divisors (37280649).

83881431 is a wasteful number, since it uses less digits than its factorization.

83881431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9320165 (or 9320162 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 83881431 is about 9158.6806364236. The cubic root of 83881431 is about 437.7457553690.

The spelling of 83881431 in words is "eighty-three million, eight hundred eighty-one thousand, four hundred thirty-one".