20031029 has 2 divisors, whose sum is σ = 20031030. Its totient is φ = 20031028.

The previous prime is 20030987. The next prime is 20031041. The reversal of 20031029 is 92013002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12794929 + 7236100 = 3577^2 + 2690^2 .

It is a cyclic number.

It is not a de Polignac number, because 20031029 - 2¹² = 20026933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20030998 and 20031016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20031059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10015514 + 10015515.

It is an arithmetic number, because the mean of its divisors is an integer number (10015515).

Almost surely, 2^20031029 is an apocalyptic number.

It is an amenable number.

20031029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20031029 is an equidigital number, since it uses as much as digits as its factorization.

20031029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20031029 is about 4475.6037581538. The cubic root of 20031029 is about 271.5820652335.

The spelling of 20031029 in words is "twenty million, thirty-one thousand, twenty-nine".