31323049 has 8 divisors (see below), whose sum is σ = 32202720. Its totient is φ = 30450336.

The previous prime is 31323023. The next prime is 31323107. The reversal of 31323049 is 94032313.

It is a happy number.

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 31323049 - 2²¹ = 29225897 is a prime.

It is a super-2 number, since 2×31323049² = 1962266797312802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31323449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8157 + ... + 11365.

It is an arithmetic number, because the mean of its divisors is an integer number (4025340).

Almost surely, 2^31323049 is an apocalyptic number.

It is an amenable number.

31323049 is a deficient number, since it is larger than the sum of its proper divisors (879671).

31323049 is a wasteful number, since it uses less digits than its factorization.

31323049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3479.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 31323049 is about 5596.6998311505. The cubic root of 31323049 is about 315.2255007465.

It can be divided in two parts, 3132304 and 9, that added together give a palindrome (3132313).

The spelling of 31323049 in words is "thirty-one million, three hundred twenty-three thousand, forty-nine".