31011413 has 8 divisors (see below), whose sum is σ = 31720248. Its totient is φ = 30307264.

The previous prime is 31011391. The next prime is 31011437. The reversal of 31011413 is 31411013.

It can be written as a sum of positive squares in 4 ways, for example, as 6340324 + 24671089 = 2518^2 + 4967^2 .

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 31011413 - 2¹⁰ = 31010389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31011443) 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 7 ways as a sum of consecutive naturals, for example, 14531 + ... + 16527.

It is an arithmetic number, because the mean of its divisors is an integer number (3965031).

Almost surely, 2^31011413 is an apocalyptic number.

It is an amenable number.

31011413 is a deficient number, since it is larger than the sum of its proper divisors (708835).

31011413 is a wasteful number, since it uses less digits than its factorization.

31011413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 31011413 is about 5568.7891861696. The cubic root of 31011413 is about 314.1766116676.

Adding to 31011413 its reverse (31411013), we get a palindrome (62422426).

The spelling of 31011413 in words is "thirty-one million, eleven thousand, four hundred thirteen".