20350031 has 8 divisors (see below), whose sum is σ = 22004304. Its totient is φ = 18708480.

The previous prime is 20349997. The next prime is 20350049. The reversal of 20350031 is 13005302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20350031 is a prime.

It is a super-2 number, since 2×20350031² = 828247523401922, 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 = 20349988 and 20350015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296 + ... + 6386.

It is an arithmetic number, because the mean of its divisors is an integer number (2750538).

Almost surely, 2^20350031 is an apocalyptic number.

20350031 is a deficient number, since it is larger than the sum of its proper divisors (1654273).

20350031 is a wasteful number, since it uses less digits than its factorization.

20350031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 20350031 is about 4511.1008634257. The cubic root of 20350031 is about 273.0161627735.

Adding to 20350031 its reverse (13005302), we get a palindrome (33355333).

The spelling of 20350031 in words is "twenty million, three hundred fifty thousand, thirty-one".