20212123031 has 8 divisors (see below), whose sum is σ = 21279850800. Its totient is φ = 19144788480.

The previous prime is 20212123027. The next prime is 20212123033. The reversal of 20212123031 is 13032121202.

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

It is a cyclic number.

It is not a de Polignac number, because 20212123031 - 2² = 20212123027 is a prime.

It is a super-2 number, since 2×20212123031² (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 (20212123033) 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, 10301 + ... + 201321.

It is an arithmetic number, because the mean of its divisors is an integer number (2659981350).

Almost surely, 2^20212123031 is an apocalyptic number.

20212123031 is a deficient number, since it is larger than the sum of its proper divisors (1067727769).

20212123031 is a wasteful number, since it uses less digits than its factorization.

20212123031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196609.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20212123031 its reverse (13032121202), we get a palindrome (33244244233).

The spelling of 20212123031 in words is "twenty billion, two hundred twelve million, one hundred twenty-three thousand, thirty-one".