31104261 has 6 divisors (see below), whose sum is σ = 44928390. Its totient is φ = 20736168.

The previous prime is 31104259. The next prime is 31104287. The reversal of 31104261 is 16240113.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 30305025 + 799236 = 5505^2 + 894^2 .

It is not a de Polignac number, because 31104261 - 2¹ = 31104259 is a prime.

It is a super-2 number, since 2×31104261² = 1934950104712242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31104361) 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 5 ways as a sum of consecutive naturals, for example, 1728006 + ... + 1728023.

It is an arithmetic number, because the mean of its divisors is an integer number (7488065).

Almost surely, 2^31104261 is an apocalyptic number.

It is an amenable number.

31104261 is a deficient number, since it is larger than the sum of its proper divisors (13824129).

31104261 is a wasteful number, since it uses less digits than its factorization.

31104261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456035 (or 3456032 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 31104261 is about 5577.1194177640. The cubic root of 31104261 is about 314.4898469496.

Adding to 31104261 its reverse (16240113), we get a palindrome (47344374).

The spelling of 31104261 in words is "thirty-one million, one hundred four thousand, two hundred sixty-one".