83431955 has 4 divisors (see below), whose sum is σ = 100118352. Its totient is φ = 66745560.

The previous prime is 83431949. The next prime is 83431961. The reversal of 83431955 is 55913438.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (83431949) and next prime (83431961).

It is not a de Polignac number, because 83431955 - 2⁶ = 83431891 is a prime.

It is a super-2 number, since 2×83431955² = 13921782230244050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8343191 + ... + 8343200.

It is an arithmetic number, because the mean of its divisors is an integer number (25029588).

Almost surely, 2^83431955 is an apocalyptic number.

83431955 is a deficient number, since it is larger than the sum of its proper divisors (16686397).

83431955 is a wasteful number, since it uses less digits than its factorization.

83431955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16686396.

The product of its digits is 64800, while the sum is 38.

The square root of 83431955 is about 9134.1094256638. The cubic root of 83431955 is about 436.9624723624.

The spelling of 83431955 in words is "eighty-three million, four hundred thirty-one thousand, nine hundred fifty-five".