82415431 has 8 divisors (see below), whose sum is σ = 95324544. Its totient is φ = 69790200.

The previous prime is 82415429. The next prime is 82415447. The reversal of 82415431 is 13451428.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82415431 - 2¹ = 82415429 is a prime.

It is a super-2 number, since 2×82415431² = 13584606533831522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 82415431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82415401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70345 + ... + 71506.

It is an arithmetic number, because the mean of its divisors is an integer number (11915568).

Almost surely, 2^82415431 is an apocalyptic number.

82415431 is a deficient number, since it is larger than the sum of its proper divisors (12909113).

82415431 is a wasteful number, since it uses less digits than its factorization.

82415431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141941.

The product of its digits is 3840, while the sum is 28.

The square root of 82415431 is about 9078.2944984176. The cubic root of 82415431 is about 435.1805847306.

Adding to 82415431 its reverse (13451428), we get a palindrome (95866859).

The spelling of 82415431 in words is "eighty-two million, four hundred fifteen thousand, four hundred thirty-one".