31264349 has 4 divisors (see below), whose sum is σ = 32342460. Its totient is φ = 30186240.

The previous prime is 31264339. The next prime is 31264351. The reversal of 31264349 is 94346213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94346213 = 13 ⋅7257401.

It can be written as a sum of positive squares in 2 ways, for example, as 14577124 + 16687225 = 3818^2 + 4085^2 .

It is a cyclic number.

It is not a de Polignac number, because 31264349 - 2¹² = 31260253 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31264339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 539012 + ... + 539069.

It is an arithmetic number, because the mean of its divisors is an integer number (8085615).

Almost surely, 2^31264349 is an apocalyptic number.

It is an amenable number.

31264349 is a deficient number, since it is larger than the sum of its proper divisors (1078111).

31264349 is a wasteful number, since it uses less digits than its factorization.

31264349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078110.

The product of its digits is 15552, while the sum is 32.

The square root of 31264349 is about 5591.4532100340. The cubic root of 31264349 is about 315.0284647159.

It can be divided in two parts, 31264 and 349, that added together give a palindrome (31613).

The spelling of 31264349 in words is "thirty-one million, two hundred sixty-four thousand, three hundred forty-nine".