31233049 has 2 divisors, whose sum is σ = 31233050. Its totient is φ = 31233048.

The previous prime is 31233047. The next prime is 31233053. The reversal of 31233049 is 94033213.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29899024 + 1334025 = 5468^2 + 1155^2 .

It is a cyclic number.

It is not a de Polignac number, because 31233049 - 2¹ = 31233047 is a prime.

Together with 31233047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31233047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616524 + 15616525.

It is an arithmetic number, because the mean of its divisors is an integer number (15616525).

Almost surely, 2^31233049 is an apocalyptic number.

It is an amenable number.

31233049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31233049 is an equidigital number, since it uses as much as digits as its factorization.

31233049 is an evil number, because the sum of its binary digits is even.

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

The square root of 31233049 is about 5588.6535945610. The cubic root of 31233049 is about 314.9233003819.

The spelling of 31233049 in words is "thirty-one million, two hundred thirty-three thousand, forty-nine".