33980731 has 2 divisors, whose sum is σ = 33980732. Its totient is φ = 33980730.

The previous prime is 33980717. The next prime is 33980747. The reversal of 33980731 is 13708933.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33980731 - 2⁵ = 33980699 is a prime.

It is a super-2 number, since 2×33980731² = 2309380158588722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33980701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16990365 + 16990366.

It is an arithmetic number, because the mean of its divisors is an integer number (16990366).

Almost surely, 2^33980731 is an apocalyptic number.

33980731 is a deficient number, since it is larger than the sum of its proper divisors (1).

33980731 is an equidigital number, since it uses as much as digits as its factorization.

33980731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 33980731 is about 5829.2993575558. The cubic root of 33980731 is about 323.8999684845.

The spelling of 33980731 in words is "thirty-three million, nine hundred eighty thousand, seven hundred thirty-one".