31082401 has 4 divisors (see below), whose sum is σ = 35522752. Its totient is φ = 26642052.

The previous prime is 31082377. The next prime is 31082419. The reversal of 31082401 is 10428013.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10428013 = 1193 ⋅8741.

It is a cyclic number.

It is not a de Polignac number, because 31082401 - 2¹⁷ = 30951329 is a prime.

It is a super-2 number, since 2×31082401² = 1932231303849602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31082431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2220165 + ... + 2220178.

It is an arithmetic number, because the mean of its divisors is an integer number (8880688).

Almost surely, 2^31082401 is an apocalyptic number.

It is an amenable number.

31082401 is a deficient number, since it is larger than the sum of its proper divisors (4440351).

31082401 is an equidigital number, since it uses as much as digits as its factorization.

31082401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4440350.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 31082401 is about 5575.1592802359. The cubic root of 31082401 is about 314.4161554469.

The spelling of 31082401 in words is "thirty-one million, eighty-two thousand, four hundred one".