20694941031 has 4 divisors (see below), whose sum is σ = 27593254712. Its totient is φ = 13796627352.

The previous prime is 20694941021. The next prime is 20694941077. The reversal of 20694941031 is 13014949602.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20694941031 - 2⁶ = 20694940967 is a prime.

It is a super-2 number, since 2×20694941031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20694941021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3449156836 + ... + 3449156841.

It is an arithmetic number, because the mean of its divisors is an integer number (6898313678).

Almost surely, 2^20694941031 is an apocalyptic number.

20694941031 is a deficient number, since it is larger than the sum of its proper divisors (6898313681).

20694941031 is an equidigital number, since it uses as much as digits as its factorization.

20694941031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6898313680.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 20694941031 in words is "twenty billion, six hundred ninety-four million, nine hundred forty-one thousand, thirty-one".