20734331 has 4 divisors (see below), whose sum is σ = 20746200. Its totient is φ = 20722464.

The previous prime is 20734321. The next prime is 20734361. The reversal of 20734331 is 13343702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20734331 - 2⁶ = 20734267 is a prime.

It is a super-2 number, since 2×20734331² = 859824964035122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20734297 and 20734306.

It is not an unprimeable number, because it can be changed into a prime (20734321) 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, 2741 + ... + 6998.

It is an arithmetic number, because the mean of its divisors is an integer number (5186550).

Almost surely, 2^20734331 is an apocalyptic number.

20734331 is a deficient number, since it is larger than the sum of its proper divisors (11869).

20734331 is an equidigital number, since it uses as much as digits as its factorization.

20734331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11868.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 20734331 is about 4553.4965685723. The cubic root of 20734331 is about 274.7240471506.

The spelling of 20734331 in words is "twenty million, seven hundred thirty-four thousand, three hundred thirty-one".