20122402031 has 4 divisors (see below), whose sum is σ = 20129279712. Its totient is φ = 20115524352.

The previous prime is 20122402021. The next prime is 20122402063. The reversal of 20122402031 is 13020422102.

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

It is a cyclic number.

It is not a de Polignac number, because 20122402031 - 2¹⁸ = 20122139887 is a prime.

It is a super-2 number, since 2×20122402031² (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 (20122402021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3434450 + ... + 3440303.

It is an arithmetic number, because the mean of its divisors is an integer number (5032319928).

Almost surely, 2^20122402031 is an apocalyptic number.

20122402031 is a deficient number, since it is larger than the sum of its proper divisors (6877681).

20122402031 is an equidigital number, since it uses as much as digits as its factorization.

20122402031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6877680.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 20122402031 its reverse (13020422102), we get a palindrome (33142824133).

The spelling of 20122402031 in words is "twenty billion, one hundred twenty-two million, four hundred two thousand, thirty-one".