20230121331 has 48 divisors (see below), whose sum is σ = 35209118880. Its totient is φ = 11445537600.

The previous prime is 20230121251. The next prime is 20230121341. The reversal of 20230121331 is 13312103202.

It is not a de Polignac number, because 20230121331 - 2⁷ = 20230121203 is a prime.

It is a super-2 number, since 2×20230121331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20230121341) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57925 + ... + 209321.

It is an arithmetic number, because the mean of its divisors is an integer number (733523310).

Almost surely, 2^20230121331 is an apocalyptic number.

20230121331 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20230121331 is a deficient number, since it is larger than the sum of its proper divisors (14978997549).

20230121331 is a wasteful number, since it uses less digits than its factorization.

20230121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151521 (or 151508 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20230121331 its reverse (13312103202), we get a palindrome (33542224533).

The spelling of 20230121331 in words is "twenty billion, two hundred thirty million, one hundred twenty-one thousand, three hundred thirty-one".